diff --git a/.etckeeper b/.etckeeper index 569b34a1..d61fbb20 100755 --- a/.etckeeper +++ b/.etckeeper @@ -51,6 +51,7 @@ maybe chmod 0755 'X11/Xsession.d' maybe chmod 0644 'X11/Xsession.d/90gpg-agent' maybe chmod 0755 'X11/xkb' maybe chmod 0644 'adduser.conf' +maybe chmod 0644 'aliases' maybe chmod 0755 'alternatives' maybe chmod 0644 'alternatives/README' maybe chmod 0755 'apache2' @@ -166,6 +167,7 @@ maybe chmod 0755 'cron.daily/aptitude' maybe chmod 0755 'cron.daily/bsdmainutils' maybe chmod 0755 'cron.daily/dpkg' maybe chmod 0755 'cron.daily/etckeeper' +maybe chmod 0755 'cron.daily/exim4-base' maybe chmod 0755 'cron.daily/logrotate' maybe chmod 0755 'cron.daily/man-db' maybe chmod 0755 'cron.daily/passwd' @@ -200,6 +202,7 @@ maybe chmod 0644 'default/console-setup' maybe chmod 0644 'default/crda' maybe chmod 0644 'default/cron' maybe chmod 0644 'default/dbus' +maybe chmod 0644 'default/exim4' maybe chmod 0644 'default/fail2ban' maybe chmod 0644 'default/fake-hwclock' maybe chmod 0644 'default/hwclock' @@ -351,6 +354,7 @@ maybe chmod 0644 'dpkg/origins/debian' maybe chmod 0644 'dpkg/origins/raspbian' maybe chmod 0644 'dpkg/shlibs.default' maybe chmod 0644 'dpkg/shlibs.override' +maybe chmod 0644 'email-addresses' maybe chmod 0644 'environment' maybe chmod 0755 'etckeeper' maybe chmod 0755 'etckeeper/commit.d' @@ -400,6 +404,59 @@ maybe chmod 0755 'etckeeper/update-ignore.d/01update-ignore' maybe chmod 0644 'etckeeper/update-ignore.d/README' maybe chmod 0755 'etckeeper/vcs.d' maybe chmod 0755 'etckeeper/vcs.d/50vcs-cmd' +maybe chmod 0755 'exim4' +maybe chmod 0755 'exim4/conf.d' +maybe chmod 0755 'exim4/conf.d/acl' +maybe chmod 0644 'exim4/conf.d/acl/00_exim4-config_header' +maybe chmod 0644 'exim4/conf.d/acl/20_exim4-config_local_deny_exceptions' +maybe chmod 0644 'exim4/conf.d/acl/30_exim4-config_check_mail' +maybe chmod 0644 'exim4/conf.d/acl/30_exim4-config_check_rcpt' +maybe chmod 0644 'exim4/conf.d/acl/40_exim4-config_check_data' +maybe chmod 0755 'exim4/conf.d/auth' +maybe chmod 0644 'exim4/conf.d/auth/00_exim4-config_header' +maybe chmod 0644 'exim4/conf.d/auth/30_exim4-config_examples' +maybe chmod 0755 'exim4/conf.d/main' +maybe chmod 0644 'exim4/conf.d/main/01_exim4-config_listmacrosdefs' +maybe chmod 0644 'exim4/conf.d/main/02_exim4-config_options' +maybe chmod 0644 'exim4/conf.d/main/03_exim4-config_tlsoptions' +maybe chmod 0644 'exim4/conf.d/main/90_exim4-config_log_selector' +maybe chmod 0755 'exim4/conf.d/retry' +maybe chmod 0644 'exim4/conf.d/retry/00_exim4-config_header' +maybe chmod 0644 'exim4/conf.d/retry/30_exim4-config' +maybe chmod 0755 'exim4/conf.d/rewrite' +maybe chmod 0644 'exim4/conf.d/rewrite/00_exim4-config_header' +maybe chmod 0644 'exim4/conf.d/rewrite/31_exim4-config_rewriting' +maybe chmod 0755 'exim4/conf.d/router' +maybe chmod 0644 'exim4/conf.d/router/00_exim4-config_header' +maybe chmod 0644 'exim4/conf.d/router/100_exim4-config_domain_literal' +maybe chmod 0644 'exim4/conf.d/router/150_exim4-config_hubbed_hosts' +maybe chmod 0644 'exim4/conf.d/router/200_exim4-config_primary' +maybe chmod 0644 'exim4/conf.d/router/300_exim4-config_real_local' +maybe chmod 0644 'exim4/conf.d/router/400_exim4-config_system_aliases' +maybe chmod 0644 'exim4/conf.d/router/500_exim4-config_hubuser' +maybe chmod 0644 'exim4/conf.d/router/600_exim4-config_userforward' +maybe chmod 0644 'exim4/conf.d/router/700_exim4-config_procmail' +maybe chmod 0644 'exim4/conf.d/router/800_exim4-config_maildrop' +maybe chmod 0644 'exim4/conf.d/router/850_exim4-config_lowuid' +maybe chmod 0644 'exim4/conf.d/router/900_exim4-config_local_user' +maybe chmod 0644 'exim4/conf.d/router/mmm_mail4root' +maybe chmod 0755 'exim4/conf.d/transport' +maybe chmod 0644 'exim4/conf.d/transport/00_exim4-config_header' +maybe chmod 0644 'exim4/conf.d/transport/10_exim4-config_transport-macros' +maybe chmod 0644 'exim4/conf.d/transport/30_exim4-config_address_file' +maybe chmod 0644 'exim4/conf.d/transport/30_exim4-config_address_pipe' +maybe chmod 0644 'exim4/conf.d/transport/30_exim4-config_address_reply' +maybe chmod 0644 'exim4/conf.d/transport/30_exim4-config_mail_spool' +maybe chmod 0644 'exim4/conf.d/transport/30_exim4-config_maildir_home' +maybe chmod 0644 'exim4/conf.d/transport/30_exim4-config_maildrop_pipe' +maybe chmod 0644 'exim4/conf.d/transport/30_exim4-config_procmail_pipe' +maybe chmod 0644 'exim4/conf.d/transport/30_exim4-config_remote_smtp' +maybe chmod 0644 'exim4/conf.d/transport/30_exim4-config_remote_smtp_smarthost' +maybe chmod 0644 'exim4/conf.d/transport/35_exim4-config_address_directory' +maybe chmod 0644 'exim4/exim4.conf.template' +maybe chgrp 'Debian-exim' 'exim4/passwd.client' +maybe chmod 0640 'exim4/passwd.client' +maybe chmod 0644 'exim4/update-exim4.conf.conf' maybe chmod 0755 'fail2ban' maybe chmod 0755 'fail2ban/action.d' maybe chmod 0644 'fail2ban/action.d/apf.conf' @@ -610,6 +667,7 @@ maybe chmod 0755 'init.d/cron' maybe chmod 0755 'init.d/dbus' maybe chmod 0755 'init.d/dhcpcd' maybe chmod 0755 'init.d/dphys-swapfile' +maybe chmod 0755 'init.d/exim4' maybe chmod 0755 'init.d/fail2ban' maybe chmod 0755 'init.d/fake-hwclock' maybe chmod 0755 'init.d/hwclock.sh' @@ -795,14 +853,18 @@ maybe chmod 0755 'logrotate.d' maybe chmod 0644 'logrotate.d/apt' maybe chmod 0644 'logrotate.d/aptitude' maybe chmod 0644 'logrotate.d/dpkg' +maybe chmod 0644 'logrotate.d/exim4-base' +maybe chmod 0644 'logrotate.d/exim4-paniclog' maybe chmod 0644 'logrotate.d/fail2ban' maybe chmod 0644 'logrotate.d/nginx' maybe chmod 0644 'logrotate.d/rsyslog' maybe chmod 0444 'machine-id' maybe chmod 0644 'magic' maybe chmod 0644 'magic.mime' +maybe chmod 0644 'mail.rc' maybe chmod 0644 'mailcap' maybe chmod 0644 'mailcap.order' +maybe chmod 0644 'mailname' maybe chmod 0644 'manpath.config' maybe chmod 0644 'mime.types' maybe chmod 0644 'mke2fs.conf' @@ -904,6 +966,7 @@ maybe chmod 0755 'ppp/ip-down.d/bind9' maybe chmod 0755 'ppp/ip-up.d' maybe chmod 0755 'ppp/ip-up.d/000resolvconf' maybe chmod 0755 'ppp/ip-up.d/bind9' +maybe chmod 0755 'ppp/ip-up.d/exim4' maybe chmod 0644 'profile' maybe chmod 0755 'profile.d' maybe chmod 0644 'profile.d/Z97-byobu.sh' diff --git a/aliases b/aliases new file mode 100644 index 00000000..f12213f2 --- /dev/null +++ b/aliases @@ -0,0 +1,13 @@ +# /etc/aliases +mailer-daemon: postmaster +postmaster: root +nobody: root +hostmaster: root +usenet: root +news: root +webmaster: root +www: root +ftp: root +abuse: root +noc: root +security: root diff --git a/alternatives/Mail b/alternatives/Mail new file mode 120000 index 00000000..20f6356b --- /dev/null +++ b/alternatives/Mail @@ -0,0 +1 @@ +/usr/bin/bsd-mailx \ No newline at end of file diff --git a/alternatives/Mail.1.gz b/alternatives/Mail.1.gz new file mode 120000 index 00000000..8f9c1945 --- /dev/null +++ b/alternatives/Mail.1.gz @@ -0,0 +1 @@ +/usr/share/man/man1/bsd-mailx.1.gz \ No newline at end of file diff --git a/alternatives/mail b/alternatives/mail new file mode 120000 index 00000000..20f6356b --- /dev/null +++ b/alternatives/mail @@ -0,0 +1 @@ +/usr/bin/bsd-mailx \ No newline at end of file diff --git a/alternatives/mail.1.gz b/alternatives/mail.1.gz new file mode 120000 index 00000000..8f9c1945 --- /dev/null +++ b/alternatives/mail.1.gz @@ -0,0 +1 @@ +/usr/share/man/man1/bsd-mailx.1.gz \ No newline at end of file diff --git a/alternatives/mailx b/alternatives/mailx new file mode 120000 index 00000000..20f6356b --- /dev/null +++ b/alternatives/mailx @@ -0,0 +1 @@ +/usr/bin/bsd-mailx \ No newline at end of file diff --git a/alternatives/mailx.1.gz b/alternatives/mailx.1.gz new file mode 120000 index 00000000..8f9c1945 --- /dev/null +++ b/alternatives/mailx.1.gz @@ -0,0 +1 @@ +/usr/share/man/man1/bsd-mailx.1.gz \ No newline at end of file diff --git a/cron.daily/exim4-base b/cron.daily/exim4-base new file mode 100755 index 00000000..9ee41406 --- /dev/null +++ b/cron.daily/exim4-base @@ -0,0 +1,105 @@ +#!/bin/sh + +if [ -n "$EX4DEBUG" ]; then + echo "now debugging $0 $@" + set -x +fi + + +# set this to some other value if you don't want the panic log to be +# watched by this script, for example when you're using your own log +# checking mechanisms or don't care. + +E4BCD_DAILY_REPORT_TO="" +E4BCD_DAILY_REPORT_OPTIONS="" +E4BCD_WATCH_PANICLOG="yes" +# Number of lines of paniclog quoted in warning email. +E4BCD_PANICLOG_LINES="10" +E4BCD_PANICLOG_NOISE="" + +# Only do anything if exim4 is actually installed +if [ ! -x /usr/lib/exim4/exim4 ]; then + exit 0 +fi + +[ -f /etc/default/exim4 ] && . /etc/default/exim4 + +SPOOLDIR="$(exim4 -bP spool_directory | sed 's/.*=[[:space:]]\(.*\)/\1/')" + +# The log processing code used in this cron script is not very +# sophisticated. It relies on this cron job being executed earlier than +# the log rotation job, and will have false results if the log is not +# rotated exactly once daily in the daily cron processing. Even in the +# default configuration, it will ignore log entries made between this +# cron job and the log rotation job. + +# Patches for more sophisticated processing are appreciated via the +# Debian BTS. + +E4BCD_MAINLOG_NOISE="^[[:digit:][:space:]:-]\{20\}\(\(Start\|End\) queue run: pid=[[:digit:]]\+\|exim [[:digit:]\.]\+ daemon started: pid=[[:digit:]]\+, .*\)$" + +if [ -n "$E4BCD_DAILY_REPORT_TO" ]; then + if [ -x "$(command -v eximstats)" ] && [ -x "$(command -v mail)" ]; then + if [ "$(< /var/log/exim4/mainlog grep -v "$E4BCD_MAINLOG_NOISE" | wc -l)" -gt "0" ]; then + < /var/log/exim4/mainlog grep -v "$E4BCD_MAINLOG_NOISE" \ + | eximstats $E4BCD_DAILY_REPORT_OPTIONS \ + | mail -s"$(hostname --fqdn) Daily e-mail activity report" \ + $E4BCD_DAILY_REPORT_TO + else + echo "no mail activity in this interval" \ + | mail -s"$(hostname --fqdn) Daily e-mail activity report" \ + $E4BCD_DAILY_REPORT_TO + fi + else + echo "The exim4 cron job is configured to send a daily report, but eximstats" + echo "and/or mail cannot be found. Please check and make sure that these two" + echo "binaries are available" + fi +fi + +log_this() { + TEXT="$@" + if ! logger -t exim4 -p mail.alert $TEXT; then + RET="$?" + echo >&2 "ALERT: could not syslog $TEXT, logger return value $RET" + fi +} + +if [ "$E4BCD_WATCH_PANICLOG" != "no" ]; then + if [ -s "/var/log/exim4/paniclog" ]; then + if [ -x "/usr/local/lib/exim4/nonzero_paniclog_hook" ]; then + /usr/local/lib/exim4/nonzero_paniclog_hook + fi + if [ -z "$E4BCD_PANICLOG_NOISE" ] || grep -vq "$E4BCD_PANICLOG_NOISE" /var/log/exim4/paniclog; then + log_this "ALERT: exim paniclog /var/log/exim4/paniclog has non-zero size, mail system possibly broken" + if ! printf "Subject: exim paniclog on %s has non-zero size\nTo: root\n\nexim paniclog /var/log/exim4/paniclog on %s has non-zero size, mail system might be broken. The last ${E4BCD_PANICLOG_LINES} lines are quoted below.\n\n%s\n" \ + "$(hostname --fqdn)" "$(hostname --fqdn)" \ + "$(tail -n "${E4BCD_PANICLOG_LINES}" /var/log/exim4/paniclog)" \ + | exim4 root; then + log_this "PANIC: sending out e-mail warning has failed, exim has non-zero return code" + fi + if [ "$E4BCD_WATCH_PANICLOG" = "once" ]; then + logrotate -f /etc/logrotate.d/exim4-paniclog + fi + fi + fi +fi + +# run tidydb as Debian-exim:Debian-exim. +if [ -x /usr/sbin/exim_tidydb ]; then + cd $SPOOLDIR/db || exit 1 + if ! find $SPOOLDIR/db -maxdepth 1 -name '*.lockfile' -or -name 'log.*' \ + -or -type f -printf '%f\0' | \ + xargs -0r -n 1 \ + start-stop-daemon --start --exec /usr/sbin/exim_tidydb \ + --chuid Debian-exim:Debian-exim -- $SPOOLDIR > /dev/null; then + # if we reach this, invoking exim_tidydb from start-stop-daemon has + # failed, most probably because of libpam-tmpdir being in use + # (see #373786 and #376165) + find $SPOOLDIR/db -maxdepth 1 -name '*.lockfile' -or -name 'log.*' \ + -or -type f -printf '%f\0' | \ + runuser --shell=/bin/bash \ + --command="xargs -0r -n 1 /usr/sbin/exim_tidydb $SPOOLDIR > /dev/null" \ + Debian-exim + fi +fi diff --git a/default/exim4 b/default/exim4 new file mode 100644 index 00000000..d46485ed --- /dev/null +++ b/default/exim4 @@ -0,0 +1,24 @@ +# /etc/default/exim4 +EX4DEF_VERSION='' + +# 'combined' - one daemon running queue and listening on SMTP port +# 'no' - no daemon running the queue +# 'separate' - two separate daemons +# 'ppp' - only run queue with /etc/ppp/ip-up.d/exim4. +# 'nodaemon' - no daemon is started at all. +# 'queueonly' - only a queue running daemon is started, no SMTP listener. +# setting this to 'no' will also disable queueruns from /etc/ppp/ip-up.d/exim4 +QUEUERUNNER='combined' +# how often should we run the queue +QUEUEINTERVAL='30m' +# options common to quez-runner and listening daemon +COMMONOPTIONS='' +# more options for the daemon/process running the queue (applies to the one +# started in /etc/ppp/ip-up.d/exim4, too. +QUEUERUNNEROPTIONS='' +# special flags given to exim directly after the -q. See exim(8) +QFLAGS='' +# Options for the SMTP listener daemon. By default, it is listening on +# port 25 only. To listen on more ports, it is recommended to use +# -oX 25:587:10025 -oP /run/exim4/exim.pid +SMTPLISTENEROPTIONS='' diff --git a/email-addresses b/email-addresses new file mode 100644 index 00000000..8e4f2cb4 --- /dev/null +++ b/email-addresses @@ -0,0 +1,9 @@ +# This is /etc/email-addresses. It is part of the exim package +# +# This file contains email addresses to use for outgoing mail. Any local +# part not in here will be qualified by the system domain as normal. +# +# It should contain lines of the form: +# +#user: someone@isp.com +#otheruser: someoneelse@anotherisp.com diff --git a/exim4/conf.d/acl/00_exim4-config_header b/exim4/conf.d/acl/00_exim4-config_header new file mode 100644 index 00000000..76b017e5 --- /dev/null +++ b/exim4/conf.d/acl/00_exim4-config_header @@ -0,0 +1,8 @@ + +###################################################################### +# ACL CONFIGURATION # +# Specifies access control lists for incoming SMTP mail # +###################################################################### +begin acl + + diff --git a/exim4/conf.d/acl/20_exim4-config_local_deny_exceptions b/exim4/conf.d/acl/20_exim4-config_local_deny_exceptions new file mode 100644 index 00000000..23727959 --- /dev/null +++ b/exim4/conf.d/acl/20_exim4-config_local_deny_exceptions @@ -0,0 +1,49 @@ + +### acl/20_exim4-config_local_deny_exceptions +################################# + +# This is used to determine whitelisted senders and hosts. +# It checks for CONFDIR/host_local_deny_exceptions and +# CONFDIR/sender_local_deny_exceptions. +# +# It is meant to be used from some other acl entry. +# +# See exim4-config_files(5) for details. +# +# If the files do not exist, the white list never matches, which is +# the desired behaviour. +# +# The old file names CONFDIR/local_host_whitelist and +# CONFDIR/local_sender_whitelist will continue to be honored for a +# transition period. Their use is deprecated. + +acl_local_deny_exceptions: + accept + hosts = ${if exists{CONFDIR/host_local_deny_exceptions}\ + {CONFDIR/host_local_deny_exceptions}\ + {}} + accept + senders = ${if exists{CONFDIR/sender_local_deny_exceptions}\ + {CONFDIR/sender_local_deny_exceptions}\ + {}} + accept + hosts = ${if exists{CONFDIR/local_host_whitelist}\ + {CONFDIR/local_host_whitelist}\ + {}} + accept + senders = ${if exists{CONFDIR/local_sender_whitelist}\ + {CONFDIR/local_sender_whitelist}\ + {}} + + # This hook allows you to hook in your own ACLs without having to + # modify this file. If you do it like we suggest, you'll end up with + # a small performance penalty since there is an additional file being + # accessed. This doesn't happen if you leave the macro unset. + .ifdef LOCAL_DENY_EXCEPTIONS_LOCAL_ACL_FILE + .include LOCAL_DENY_EXCEPTIONS_LOCAL_ACL_FILE + .endif + + # this is still supported for a transition period and is deprecated. + .ifdef WHITELIST_LOCAL_DENY_LOCAL_ACL_FILE + .include WHITELIST_LOCAL_DENY_LOCAL_ACL_FILE + .endif diff --git a/exim4/conf.d/acl/30_exim4-config_check_mail b/exim4/conf.d/acl/30_exim4-config_check_mail new file mode 100644 index 00000000..f8c53d6e --- /dev/null +++ b/exim4/conf.d/acl/30_exim4-config_check_mail @@ -0,0 +1,11 @@ + +### acl/30_exim4-config_check_mail +################################# + +# This access control list is used for every MAIL command in an incoming +# SMTP message. The tests are run in order until the address is either +# accepted or denied. +# +acl_check_mail: + + accept diff --git a/exim4/conf.d/acl/30_exim4-config_check_rcpt b/exim4/conf.d/acl/30_exim4-config_check_rcpt new file mode 100644 index 00000000..d616720b --- /dev/null +++ b/exim4/conf.d/acl/30_exim4-config_check_rcpt @@ -0,0 +1,363 @@ + +### acl/30_exim4-config_check_rcpt +################################# + +# This access control list is used for every RCPT command in an incoming +# SMTP message. The tests are run in order until the address is either +# accepted or denied. +# +acl_check_rcpt: + + # Accept if the source is local SMTP (i.e. not over TCP/IP). We do this by + # testing for an empty sending host field. + accept + hosts = : + control = dkim_disable_verify + + # Do not try to verify DKIM signatures of incoming mail if DC_minimaldns + # or DISABLE_DKIM_VERIFY are set. +.ifdef DC_minimaldns + warn + control = dkim_disable_verify +.else +.ifdef DISABLE_DKIM_VERIFY + warn + control = dkim_disable_verify +.endif +.endif + + # The following section of the ACL is concerned with local parts that contain + # certain non-alphanumeric characters. Dots in unusual places are + # handled by this ACL as well. + # + # Non-alphanumeric characters other than dots are rarely found in genuine + # local parts, but are often tried by people looking to circumvent + # relaying restrictions. Therefore, although they are valid in local + # parts, these rules disallow certain non-alphanumeric characters, as + # a precaution. + # + # Empty components (two dots in a row) are not valid in RFC 2822, but Exim + # allows them because they have been encountered. (Consider local parts + # constructed as "firstinitial.secondinitial.familyname" when applied to + # a name without a second initial.) However, a local part starting + # with a dot or containing /../ can cause trouble if it is used as part of a + # file name (e.g. for a mailing list). This is also true for local parts that + # contain slashes. A pipe symbol can also be troublesome if the local part is + # incorporated unthinkingly into a shell command line. + # + # These ACL components will block recipient addresses that are valid + # from an RFC2822 point of view. We chose to have them blocked by + # default for security reasons. + # + # If you feel that your site should have less strict recipient + # checking, please feel free to change the default values of the macros + # defined in main/01_exim4-config_listmacrosdefs or override them from a + # local configuration file. + # + # Two different rules are used. The first one has a quite strict + # default, and is applied to messages that are addressed to one of the + # local domains handled by this host. + + # The default value of CHECK_RCPT_LOCAL_LOCALPARTS is defined in + # main/01_exim4-config_listmacrosdefs: + # CHECK_RCPT_LOCAL_LOCALPARTS = ^[.] : ^.*[@%!/|`#&?] + # This blocks local parts that begin with a dot or contain a quite + # broad range of non-alphanumeric characters. + .ifdef CHECK_RCPT_LOCAL_LOCALPARTS + deny + domains = +local_domains + local_parts = CHECK_RCPT_LOCAL_LOCALPARTS + message = restricted characters in address + .endif + + + # The second rule applies to all other domains, and its default is + # considerably less strict. + + # The default value of CHECK_RCPT_REMOTE_LOCALPARTS is defined in + # main/01_exim4-config_listmacrosdefs: + # CHECK_RCPT_REMOTE_LOCALPARTS = ^[./|] : ^.*[@%!`#&?] : ^.*/\\.\\./ + + # It allows local users to send outgoing messages to sites + # that use slashes and vertical bars in their local parts. It blocks + # local parts that begin with a dot, slash, or vertical bar, but allows + # these characters within the local part. However, the sequence /../ is + # barred. The use of some other non-alphanumeric characters is blocked. + # Single quotes might probably be dangerous as well, but they're + # allowed by the default regexps to avoid rejecting mails to Ireland. + # The motivation here is to prevent local users (or local users' malware) + # from mounting certain kinds of attack on remote sites. + .ifdef CHECK_RCPT_REMOTE_LOCALPARTS + deny + domains = !+local_domains + local_parts = CHECK_RCPT_REMOTE_LOCALPARTS + message = restricted characters in address + .endif + + + # Accept mail to postmaster in any local domain, regardless of the source, + # and without verifying the sender. + # + accept + .ifndef CHECK_RCPT_POSTMASTER + local_parts = postmaster + .else + local_parts = CHECK_RCPT_POSTMASTER + .endif + domains = +local_domains : +relay_to_domains + + + # Deny unless the sender address can be verified. + # + # This is disabled by default so that DNSless systems don't break. If + # your system can do DNS lookups without delay or cost, you might want + # to enable this feature. + # + # This feature does not work in smarthost and satellite setups as + # with these setups all domains pass verification. See spec.txt section + # "Access control lists" subsection "Address verification" with the added + # information that a smarthost/satellite setup routes all non-local e-mail + # to the smarthost. + .ifdef CHECK_RCPT_VERIFY_SENDER + deny + message = Sender verification failed + !acl = acl_local_deny_exceptions + !verify = sender + .endif + + # Verify senders listed in local_sender_callout with a callout. + # + # In smarthost and satellite setups, this causes the callout to be + # done to the smarthost. Verification will thus only be reliable if the + # smarthost does reject illegal addresses in the SMTP dialog. + deny + !acl = acl_local_deny_exceptions + senders = ${if exists{CONFDIR/local_sender_callout}\ + {CONFDIR/local_sender_callout}\ + {}} + !verify = sender/callout + + + # Accept if the message comes from one of the hosts for which we are an + # outgoing relay. It is assumed that such hosts are most likely to be MUAs, + # so we set control=submission to make Exim treat the message as a + # submission. It will fix up various errors in the message, for example, the + # lack of a Date: header line. If you are actually relaying out out from + # MTAs, you may want to disable this. If you are handling both relaying from + # MTAs and submissions from MUAs you should probably split them into two + # lists, and handle them differently. + + # Recipient verification is omitted here, because in many cases the clients + # are dumb MUAs that don't cope well with SMTP error responses. If you are + # actually relaying out from MTAs, you should probably add recipient + # verification here. + + # Note that, by putting this test before any DNS black list checks, you will + # always accept from these hosts, even if they end up on a black list. The + # assumption is that they are your friends, and if they get onto black + # list, it is a mistake. + accept + hosts = +relay_from_hosts + control = submission/sender_retain + control = dkim_disable_verify + + + # Accept if the message arrived over an authenticated connection, from + # any host. Again, these messages are usually from MUAs, so recipient + # verification is omitted, and submission mode is set. And again, we do this + # check before any black list tests. + accept + authenticated = * + control = submission/sender_retain + control = dkim_disable_verify + + # Insist that a HELO/EHLO was accepted. + + require message = nice hosts say HELO first + condition = ${if def:sender_helo_name} + + # Insist that any other recipient address that we accept is either in one of + # our local domains, or is in a domain for which we explicitly allow + # relaying. Any other domain is rejected as being unacceptable for relaying. + require + message = relay not permitted + domains = +local_domains : +relay_to_domains + + + # We also require all accepted addresses to be verifiable. This check will + # do local part verification for local domains, but only check the domain + # for remote domains. + require + verify = recipient + + + # Verify recipients listed in local_rcpt_callout with a callout. + # This is especially handy for forwarding MX hosts (secondary MX or + # mail hubs) of domains that receive a lot of spam to non-existent + # addresses. The only way to check local parts for remote relay + # domains is to use a callout (add /callout), but please read the + # documentation about callouts before doing this. + deny + !acl = acl_local_deny_exceptions + recipients = ${if exists{CONFDIR/local_rcpt_callout}\ + {CONFDIR/local_rcpt_callout}\ + {}} + !verify = recipient/callout + + + # CONFDIR/local_sender_blacklist holds a list of envelope senders that + # should have their access denied to the local host. Incoming messages + # with one of these senders are rejected at RCPT time. + # + # The explicit white lists are honored as well as negative items in + # the black list. See exim4-config_files(5) for details. + deny + message = sender envelope address $sender_address is locally blacklisted here. If you think this is wrong, get in touch with postmaster + !acl = acl_local_deny_exceptions + senders = ${if exists{CONFDIR/local_sender_blacklist}\ + {CONFDIR/local_sender_blacklist}\ + {}} + + + # deny bad sites (IP address) + # CONFDIR/local_host_blacklist holds a list of host names, IP addresses + # and networks (CIDR notation) that should have their access denied to + # The local host. Messages coming in from a listed host will have all + # RCPT statements rejected. + # + # The explicit white lists are honored as well as negative items in + # the black list. See exim4-config_files(5) for details. + deny + message = sender IP address $sender_host_address is locally blacklisted here. If you think this is wrong, get in touch with postmaster + !acl = acl_local_deny_exceptions + hosts = ${if exists{CONFDIR/local_host_blacklist}\ + {CONFDIR/local_host_blacklist}\ + {}} + + + # Warn if the sender host does not have valid reverse DNS. + # + # If your system can do DNS lookups without delay or cost, you might want + # to enable this. + # If sender_host_address is defined, it's a remote call. If + # sender_host_name is not defined, then reverse lookup failed. Use + # this instead of !verify = reverse_host_lookup to catch deferrals + # as well as outright failures. + .ifdef CHECK_RCPT_REVERSE_DNS + warn + condition = ${if and{{def:sender_host_address}{!def:sender_host_name}}\ + {yes}{no}} + add_header = X-Host-Lookup-Failed: Reverse DNS lookup failed for $sender_host_address (${if eq{$host_lookup_failed}{1}{failed}{deferred}}) + .endif + + + # Use spfquery to perform a pair of SPF checks (for details, see + # http://www.openspf.org/) + # + # This is quite costly in terms of DNS lookups (~6 lookups per mail). Do not + # enable if that's an issue. Also note that if you enable this, you must + # install "spf-tools-perl" which provides the spfquery command. + # Missing spf-tools-perl will trigger the "Unexpected error in + # SPF check" warning. + .ifdef CHECK_RCPT_SPF + deny + message = [SPF] $sender_host_address is not allowed to send mail from \ + ${if def:sender_address_domain {$sender_address_domain}{$sender_helo_name}}. \ + Please see \ + http://www.openspf.org/Why?scope=${if def:sender_address_domain \ + {mfrom}{helo}};identity=${if def:sender_address_domain \ + {$sender_address}{$sender_helo_name}};ip=$sender_host_address + log_message = SPF check failed. + !acl = acl_local_deny_exceptions + condition = ${run{/usr/bin/spfquery.mail-spf-perl --ip \ + ${quote:$sender_host_address} --identity \ + ${if def:sender_address_domain \ + {--scope mfrom --identity ${quote:$sender_address}}\ + {--scope helo --identity ${quote:$sender_helo_name}}}}\ + {no}{${if eq {$runrc}{1}{yes}{no}}}} + + defer + message = Temporary DNS error while checking SPF record. Try again later. + !acl = acl_local_deny_exceptions + condition = ${if eq {$runrc}{5}{yes}{no}} + + warn + condition = ${if <={$runrc}{6}{yes}{no}} + add_header = Received-SPF: ${if eq {$runrc}{0}{pass}\ + {${if eq {$runrc}{2}{softfail}\ + {${if eq {$runrc}{3}{neutral}\ + {${if eq {$runrc}{4}{permerror}\ + {${if eq {$runrc}{6}{none}{error}}}}}}}}}\ + } client-ip=$sender_host_address; \ + ${if def:sender_address_domain \ + {envelope-from=${sender_address}; }{}}\ + helo=$sender_helo_name + + warn + log_message = Unexpected error in SPF check. + condition = ${if >{$runrc}{6}{yes}{no}} + .endif + + + # Check against classic DNS "black" lists (DNSBLs) which list + # sender IP addresses + .ifdef CHECK_RCPT_IP_DNSBLS + warn + dnslists = CHECK_RCPT_IP_DNSBLS + add_header = X-Warning: $sender_host_address is listed at $dnslist_domain ($dnslist_value: $dnslist_text) + log_message = $sender_host_address is listed at $dnslist_domain ($dnslist_value: $dnslist_text) + .endif + + + # Check against DNSBLs which list sender domains, with an option to locally + # whitelist certain domains that might be blacklisted. + # + # Note: If you define CHECK_RCPT_DOMAIN_DNSBLS, you must append + # "/$sender_address_domain" after each domain. For example: + # CHECK_RCPT_DOMAIN_DNSBLS = rhsbl.foo.org/$sender_address_domain \ + # : rhsbl.bar.org/$sender_address_domain + .ifdef CHECK_RCPT_DOMAIN_DNSBLS + warn + !senders = ${if exists{CONFDIR/local_domain_dnsbl_whitelist}\ + {CONFDIR/local_domain_dnsbl_whitelist}\ + {}} + dnslists = CHECK_RCPT_DOMAIN_DNSBLS + add_header = X-Warning: $sender_address_domain is listed at $dnslist_domain ($dnslist_value: $dnslist_text) + log_message = $sender_address_domain is listed at $dnslist_domain ($dnslist_value: $dnslist_text) + .endif + + + # This hook allows you to hook in your own ACLs without having to + # modify this file. If you do it like we suggest, you'll end up with + # a small performance penalty since there is an additional file being + # accessed. This doesn't happen if you leave the macro unset. + .ifdef CHECK_RCPT_LOCAL_ACL_FILE + .include CHECK_RCPT_LOCAL_ACL_FILE + .endif + + + ############################################################################# + # This check is commented out because it is recognized that not every + # sysadmin will want to do it. If you enable it, the check performs + # Client SMTP Authorization (csa) checks on the sending host. These checks + # do DNS lookups for SRV records. The CSA proposal is currently (May 2005) + # an Internet draft. You can, of course, add additional conditions to this + # ACL statement to restrict the CSA checks to certain hosts only. + # + # require verify = csa + ############################################################################# + + + # Accept if the address is in a domain for which we are an incoming relay, + # but again, only if the recipient can be verified. + + accept + domains = +relay_to_domains + endpass + verify = recipient + + + # At this point, the address has passed all the checks that have been + # configured, so we accept it unconditionally. + + accept diff --git a/exim4/conf.d/acl/40_exim4-config_check_data b/exim4/conf.d/acl/40_exim4-config_check_data new file mode 100644 index 00000000..abfa1643 --- /dev/null +++ b/exim4/conf.d/acl/40_exim4-config_check_data @@ -0,0 +1,84 @@ + +### acl/40_exim4-config_check_data +################################# + +# This ACL is used after the contents of a message have been received. This +# is the ACL in which you can test a message's headers or body, and in +# particular, this is where you can invoke external virus or spam scanners. + +acl_check_data: + + # Deny if the message contains an overlong line. Per the standards + # we should never receive one such via SMTP. + # + .ifndef IGNORE_SMTP_LINE_LENGTH_LIMIT + deny message = maximum allowed line length is 998 octets, \ + got $max_received_linelength + condition = ${if > {$max_received_linelength}{998}} + .endif + + # Deny unless the address list headers are syntactically correct. + # + # If you enable this, you might reject legitimate mail. + .ifdef CHECK_DATA_VERIFY_HEADER_SYNTAX + deny + message = Message headers fail syntax check + !acl = acl_local_deny_exceptions + !verify = header_syntax + .endif + + + # require that there is a verifiable sender address in at least + # one of the "Sender:", "Reply-To:", or "From:" header lines. + .ifdef CHECK_DATA_VERIFY_HEADER_SENDER + deny + message = No verifiable sender address in message headers + !acl = acl_local_deny_exceptions + !verify = header_sender + .endif + + + # Deny if the message contains malware. Before enabling this check, you + # must install a virus scanner and set the av_scanner option in the + # main configuration. + # + # exim4-daemon-heavy must be used for this section to work. + # + # deny + # malware = * + # message = This message was detected as possible malware ($malware_name). + + + # Add headers to a message if it is judged to be spam. Before enabling this, + # you must install SpamAssassin. You also need to set the spamd_address + # option in the main configuration. + # + # exim4-daemon-heavy must be used for this section to work. + # + # Please note that this is only suiteable as an example. There are + # multiple issues with this configuration method. For example, if you go + # this way, you'll give your spamassassin daemon write access to the + # entire exim spool which might be a security issue in case of a + # spamassassin exploit. + # + # See the exim docs and the exim wiki for more suitable examples. + # + # warn + # spam = Debian-exim:true + # add_header = X-Spam_score: $spam_score\n\ + # X-Spam_score_int: $spam_score_int\n\ + # X-Spam_bar: $spam_bar\n\ + # X-Spam_report: $spam_report + + + # This hook allows you to hook in your own ACLs without having to + # modify this file. If you do it like we suggest, you'll end up with + # a small performance penalty since there is an additional file being + # accessed. This doesn't happen if you leave the macro unset. + .ifdef CHECK_DATA_LOCAL_ACL_FILE + .include CHECK_DATA_LOCAL_ACL_FILE + .endif + + + # accept otherwise + accept diff --git a/exim4/conf.d/auth/00_exim4-config_header b/exim4/conf.d/auth/00_exim4-config_header new file mode 100644 index 00000000..c5f8fc15 --- /dev/null +++ b/exim4/conf.d/auth/00_exim4-config_header @@ -0,0 +1,8 @@ + +###################################################################### +# AUTHENTICATION CONFIGURATION # +###################################################################### + +begin authenticators + + diff --git a/exim4/conf.d/auth/30_exim4-config_examples b/exim4/conf.d/auth/30_exim4-config_examples new file mode 100644 index 00000000..b3b1ce69 --- /dev/null +++ b/exim4/conf.d/auth/30_exim4-config_examples @@ -0,0 +1,254 @@ + +### auth/30_exim4-config_examples +################################# + +# The examples below are for server side authentication, when the +# local exim is SMTP server and clients authenticate to the local exim. + +# They allow two styles of plain-text authentication against an +# CONFDIR/passwd file whose syntax is described in exim4_passwd(5). + +# Hosts that are allowed to use AUTH are defined by the +# auth_advertise_hosts option in the main configuration. The default is +# "*", which allows authentication to all hosts over all kinds of +# connections if there is at least one authenticator defined here. +# Authenticators which rely on unencrypted clear text passwords don't +# advertise on unencrypted connections by default. Thus, it might be +# wise to set up TLS to allow encrypted connections. If TLS cannot be +# used for some reason, you can set AUTH_SERVER_ALLOW_NOTLS_PASSWORDS to +# advertise unencrypted clear text password based authenticators on all +# connections. As this is severely reducing security, using TLS is +# preferred over allowing clear text password based authenticators on +# unencrypted connections. + +# PLAIN authentication has no server prompts. The client sends its +# credentials in one lump, containing an authorization ID (which we do not +# use), an authentication ID, and a password. The latter two appear as +# $auth2 and $auth3 in the configuration and should be checked against a +# valid username and password. In a real configuration you would typically +# use $auth2 as a lookup key, and compare $auth3 against the result of the +# lookup, perhaps using the crypteq{}{} condition. + +# plain_server: +# driver = plaintext +# public_name = PLAIN +# server_condition = "${if crypteq{$auth3}{${extract{1}{:}{${lookup{$auth2}lsearch{CONFDIR/passwd}{$value}{*:*}}}}}{1}{0}}" +# server_set_id = $auth2 +# server_prompts = : +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif + +# LOGIN authentication has traditional prompts and responses. There is no +# authorization ID in this mechanism, so unlike PLAIN the username and +# password are $auth1 and $auth2. Apart from that you can use the same +# server_condition setting for both authenticators. + +# login_server: +# driver = plaintext +# public_name = LOGIN +# server_prompts = "Username:: : Password::" +# server_condition = "${if crypteq{$auth2}{${extract{1}{:}{${lookup{$auth1}lsearch{CONFDIR/passwd}{$value}{*:*}}}}}{1}{0}}" +# server_set_id = $auth1 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif +# +# cram_md5_server: +# driver = cram_md5 +# public_name = CRAM-MD5 +# server_secret = ${extract{2}{:}{${lookup{$auth1}lsearch{CONFDIR/passwd}{$value}fail}}} +# server_set_id = $auth1 + +# Here is an example of CRAM-MD5 authentication against PostgreSQL: +# +# psqldb_auth_server: +# driver = cram_md5 +# public_name = CRAM-MD5 +# server_secret = ${lookup pgsql{SELECT pw FROM users WHERE username = '${quote_pgsql:$auth1}'}{$value}fail} +# server_set_id = $auth1 + +# Authenticate against local passwords using sasl2-bin +# Requires exim_uid to be a member of sasl group, see README.Debian.gz +# plain_saslauthd_server: +# driver = plaintext +# public_name = PLAIN +# server_condition = ${if saslauthd{{$auth2}{$auth3}}{1}{0}} +# server_set_id = $auth2 +# server_prompts = : +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif +# +# login_saslauthd_server: +# driver = plaintext +# public_name = LOGIN +# server_prompts = "Username:: : Password::" +# # don't send system passwords over unencrypted connections +# server_condition = ${if saslauthd{{$auth1}{$auth2}}{1}{0}} +# server_set_id = $auth1 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif +# +# ntlm_sasl_server: +# driver = cyrus_sasl +# public_name = NTLM +# server_realm = +# server_set_id = $auth1 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif +# +# digest_md5_sasl_server: +# driver = cyrus_sasl +# public_name = DIGEST-MD5 +# server_realm = +# server_set_id = $auth1 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif + +# Authentcate against cyrus-sasl +# This is mainly untested, please report any problems to +# pkg-exim4-users@lists.alioth.debian.org. +# cram_md5_sasl_server: +# driver = cyrus_sasl +# public_name = CRAM-MD5 +# server_realm = +# server_set_id = $auth1 +# +# plain_sasl_server: +# driver = cyrus_sasl +# public_name = PLAIN +# server_realm = +# server_set_id = $auth1 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif +# +# login_sasl_server: +# driver = cyrus_sasl +# public_name = LOGIN +# server_realm = +# server_set_id = $auth1 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif + +# Authenticate against courier authdaemon + +# This is now the (working!) example from +# http://www.exim.org/eximwiki/FAQ/Policy_controls/Q0730 +# Possible pitfall: access rights on /var/run/courier/authdaemon/socket. +# plain_courier_authdaemon: +# driver = plaintext +# public_name = PLAIN +# server_condition = \ +# ${extract {ADDRESS} \ +# {${readsocket{/var/run/courier/authdaemon/socket} \ +# {AUTH ${strlen:exim\nlogin\n$auth2\n$auth3\n}\nexim\nlogin\n$auth2\n$auth3\n} }} \ +# {yes} \ +# fail} +# server_set_id = $auth2 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif + +# login_courier_authdaemon: +# driver = plaintext +# public_name = LOGIN +# server_prompts = Username:: : Password:: +# server_condition = \ +# ${extract {ADDRESS} \ +# {${readsocket{/var/run/courier/authdaemon/socket} \ +# {AUTH ${strlen:exim\nlogin\n$auth1\n$auth2\n}\nexim\nlogin\n$auth1\n$auth2\n} }} \ +# {yes} \ +# fail} +# server_set_id = $auth1 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif + +# This one is a bad hack to support the broken version 4.xx of +# Microsoft Outlook Express which violates the RFCs by demanding +# "250-AUTH=" instead of "250-AUTH ". +# If your list of offered authenticators is other than PLAIN and LOGIN, +# you need to adapt the public_name line manually. +# It has to be the last authenticator to work and has not been tested +# well. Use at your own risk. +# See the thread entry point from +# http://www.exim.org/mail-archives/exim-users/Week-of-Mon-20050214/msg00213.html +# for the related discussion on the exim-users mailing list. +# Thanks to Fred Viles for this great work. + +# support_broken_outlook_express_4_server: +# driver = plaintext +# public_name = "\r\n250-AUTH=PLAIN LOGIN" +# server_prompts = User Name : Password +# server_condition = no +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif + +############## +# See /usr/share/doc/exim4-base/README.Debian.gz +############## + +# These examples below are the equivalent for client side authentication. +# They get the passwords from CONFDIR/passwd.client, whose format is +# defined in exim4_passwd_client(5) + +# Because AUTH PLAIN and AUTH LOGIN send the password in clear, we +# only allow these mechanisms over encrypted connections by default. +# You can set AUTH_CLIENT_ALLOW_NOTLS_PASSWORDS to allow unencrypted +# clear text password authentication on all connections. + +cram_md5: + driver = cram_md5 + public_name = CRAM-MD5 + client_name = ${extract{1}{:}{${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$value}fail}}} + client_secret = ${extract{2}{:}{${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$value}fail}}} + +# this returns the matching line from passwd.client and doubles all ^ +PASSWDLINE=${sg{\ + ${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$value}fail}\ + }\ + {\\N[\\^]\\N}\ + {^^}\ + } + +plain: + driver = plaintext + public_name = PLAIN +.ifndef AUTH_CLIENT_ALLOW_NOTLS_PASSWORDS + client_send = "<; ${if !eq{$tls_out_cipher}{}\ + {^${extract{1}{:}{PASSWDLINE}}\ + ^${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}\ + }fail}" +.else + client_send = "<; ^${extract{1}{:}{PASSWDLINE}}\ + ^${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}" +.endif + +login: + driver = plaintext + public_name = LOGIN +.ifndef AUTH_CLIENT_ALLOW_NOTLS_PASSWORDS + # Return empty string if not non-TLS AND looking up $host in passwd-file + # yields a non-empty string; fail otherwise. + client_send = "<; ${if and{\ + {!eq{$tls_out_cipher}{}}\ + {!eq{PASSWDLINE}{}}\ + }\ + {}fail}\ + ; ${extract{1}{::}{PASSWDLINE}}\ + ; ${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}" +.else + # Return empty string if looking up $host in passwd-file yields a + # non-empty string; fail otherwise. + client_send = "<; ${if !eq{PASSWDLINE}{}\ + {}fail}\ + ; ${extract{1}{::}{PASSWDLINE}}\ + ; ${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}" +.endif diff --git a/exim4/conf.d/main/01_exim4-config_listmacrosdefs b/exim4/conf.d/main/01_exim4-config_listmacrosdefs new file mode 100644 index 00000000..82b0d1ff --- /dev/null +++ b/exim4/conf.d/main/01_exim4-config_listmacrosdefs @@ -0,0 +1,101 @@ +###################################################################### +# Runtime configuration file for Exim 4 (Debian Packaging) # +###################################################################### + +###################################################################### +# /etc/exim4/exim4.conf.template is only used with the non-split +# configuration scheme. +# /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs is only used +# with the split configuration scheme. +# If you find this comment anywhere else, somebody copied it there. +# Documentation about the Debian exim4 configuration scheme can be +# found in /usr/share/doc/exim4-base/README.Debian.gz. +###################################################################### + +###################################################################### +# MAIN CONFIGURATION SETTINGS # +###################################################################### + +# Just for reference and scripts. +# On Debian systems, the main binary is installed as exim4 to avoid +# conflicts with the exim 3 packages. +exim_path = /usr/sbin/exim4 + +# Macro defining the main configuration directory. +# We do not use absolute paths. +.ifndef CONFDIR +CONFDIR = /etc/exim4 +.endif + +# debconf-driven macro definitions get inserted after this line +UPEX4CmacrosUPEX4C = 1 + +# Create domain and host lists for relay control +# '@' refers to 'the name of the local host' + +# List of domains considered local for exim. Domains not listed here +# need to be deliverable remotely. +domainlist local_domains = MAIN_LOCAL_DOMAINS + +# List of recipient domains to relay _to_. Use this list if you're - +# for example - fallback MX or mail gateway for domains. +domainlist relay_to_domains = MAIN_RELAY_TO_DOMAINS + +# List of sender networks (IP addresses) to _unconditionally_ relay +# _for_. If you intend to be SMTP AUTH server, you do not need to enter +# anything here. +hostlist relay_from_hosts = MAIN_RELAY_NETS + + +# Decide which domain to use to add to all unqualified addresses. +# If MAIN_PRIMARY_HOSTNAME_AS_QUALIFY_DOMAIN is defined, the primary +# hostname is used. If not, but MAIN_QUALIFY_DOMAIN is set, the value +# of MAIN_QUALIFY_DOMAIN is used. If both macros are not defined, +# the first line of /etc/mailname is used. +.ifndef MAIN_PRIMARY_HOSTNAME_AS_QUALIFY_DOMAIN +.ifndef MAIN_QUALIFY_DOMAIN +qualify_domain = ETC_MAILNAME +.else +qualify_domain = MAIN_QUALIFY_DOMAIN +.endif +.endif + +# listen on all all interfaces? +.ifdef MAIN_LOCAL_INTERFACES +local_interfaces = MAIN_LOCAL_INTERFACES +.endif + +.ifndef LOCAL_DELIVERY +# The default transport, set in /etc/exim4/update-exim4.conf.conf, +# defaulting to mail_spool. See CONFDIR/conf.d/transport/ for possibilities +LOCAL_DELIVERY=mail_spool +.endif + +# The gecos field in /etc/passwd holds not only the name. see passwd(5). +gecos_pattern = ^([^,:]*) +gecos_name = $1 + +# define macros to be used in acl/30_exim4-config_check_rcpt to check +# recipient local parts for strange characters. + +# This macro definition really should be in +# acl/30_exim4-config_check_rcpt but cannot be there due to +# http://www.exim.org/bugzilla/show_bug.cgi?id=101 as of exim 4.62. + +# These macros are documented in acl/30_exim4-config_check_rcpt, +# can be changed here or overridden by a locally added configuration +# file as described in README.Debian section "Using Exim Macros to control +# the configuration". + +.ifndef CHECK_RCPT_LOCAL_LOCALPARTS +CHECK_RCPT_LOCAL_LOCALPARTS = ^[.] : ^.*[@%!/|`#&?] +.endif + +.ifndef CHECK_RCPT_REMOTE_LOCALPARTS +CHECK_RCPT_REMOTE_LOCALPARTS = ^[./|] : ^.*[@%!`#&?] : ^.*/\\.\\./ +.endif + +# always log tls_peerdn as we use TLS for outgoing connects by default +.ifndef MAIN_LOG_SELECTOR +MAIN_LOG_SELECTOR = +smtp_protocol_error +smtp_syntax_error +tls_certificate_verified +tls_peerdn +.endif diff --git a/exim4/conf.d/main/02_exim4-config_options b/exim4/conf.d/main/02_exim4-config_options new file mode 100644 index 00000000..bf00d035 --- /dev/null +++ b/exim4/conf.d/main/02_exim4-config_options @@ -0,0 +1,218 @@ + +### main/02_exim4-config_options +################################# + + +# Defines the access control list that is run when an +# SMTP MAIL command is received. +# +.ifndef MAIN_ACL_CHECK_MAIL +MAIN_ACL_CHECK_MAIL = acl_check_mail +.endif +acl_smtp_mail = MAIN_ACL_CHECK_MAIL + + +# Defines the access control list that is run when an +# SMTP RCPT command is received. +# +.ifndef MAIN_ACL_CHECK_RCPT +MAIN_ACL_CHECK_RCPT = acl_check_rcpt +.endif +acl_smtp_rcpt = MAIN_ACL_CHECK_RCPT + + +# Defines the access control list that is run when an +# SMTP DATA command is received. +# +.ifndef MAIN_ACL_CHECK_DATA +MAIN_ACL_CHECK_DATA = acl_check_data +.endif +acl_smtp_data = MAIN_ACL_CHECK_DATA + + +# Message size limit. The default (used when MESSAGE_SIZE_LIMIT +# is unset) is 50 MB +.ifdef MESSAGE_SIZE_LIMIT +message_size_limit = MESSAGE_SIZE_LIMIT +.endif + + +# If you are running exim4-daemon-heavy or a custom version of Exim that +# was compiled with the content-scanning extension, you can cause incoming +# messages to be automatically scanned for viruses. You have to modify the +# configuration in two places to set this up. The first of them is here, +# where you define the interface to your scanner. This example is typical +# for ClamAV; see the manual for details of what to set for other virus +# scanners. The second modification is in the acl_check_data access +# control list. + +# av_scanner = clamd:/var/run/clamav/clamd.ctl + + +# For spam scanning, there is a similar option that defines the interface to +# SpamAssassin. You do not need to set this if you are using the default, which +# is shown in this commented example. As for virus scanning, you must also +# modify the acl_check_data access control list to enable spam scanning. + +# spamd_address = 127.0.0.1 783 + +# Domain used to qualify unqualified recipient addresses +# If this option is not set, the qualify_domain value is used. +# qualify_recipient = + + +# Allow Exim to recognize addresses of the form "user@[10.11.12.13]", +# where the domain part is a "domain literal" (an IP address) instead +# of a named domain. The RFCs require this facility, but it is disabled +# in the default config since it is rarely used and frequently abused. +# Domain literal support also needs a special router, which is automatically +# enabled if you use the enable macro MAIN_ALLOW_DOMAIN_LITERALS. +# Additionally, you might want to make your local IP addresses (or @[]) +# local domains. +.ifdef MAIN_ALLOW_DOMAIN_LITERALS +allow_domain_literals +.endif + + +# Do a reverse DNS lookup on all incoming IP calls, in order to get the +# true host name. If you feel this is too expensive, the networks for +# which a lookup is done can be listed here. +.ifndef DC_minimaldns +.ifndef MAIN_HOST_LOOKUP +MAIN_HOST_LOOKUP = * +.endif +host_lookup = MAIN_HOST_LOOKUP +.endif + + +# In a minimaldns setup, update-exim4.conf guesses the hostname and +# dumps it here to avoid DNS lookups being done at Exim run time. +.ifdef MAIN_HARDCODE_PRIMARY_HOSTNAME +primary_hostname = MAIN_HARDCODE_PRIMARY_HOSTNAME +.endif + +# The settings below cause Exim to make RFC 1413 (ident) callbacks +# for all incoming SMTP calls. You can limit the hosts to which these +# calls are made, and/or change the timeout that is used. If you set +# the timeout to zero, all RFC 1413 calls are disabled. RFC 1413 calls +# are cheap and can provide useful information for tracing problem +# messages, but some hosts and firewalls have problems with them. +# This can result in a timeout instead of an immediate refused +# connection, leading to delays on starting up SMTP sessions. +# (The default was reduced from 30s to 5s for release 4.61. and to +# disabled for release 4.86) +# +#rfc1413_hosts = * +#rfc1413_query_timeout = 5s + + +# Enable an efficiency feature. We advertise the feature; clients +# may request to use it. For multi-recipient mails we then can +# reject or accept per-user after the message is received. +# +prdr_enable = true + +# When using an external relay tester (such as rt.njabl.org and/or the +# currently defunct relay-test.mail-abuse.org, the test may be aborted +# since exim complains about "too many nonmail commands". If you want +# the test to complete, add the host from where "your" relay tester +# connects from to the MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS macro. +# Please note that a non-empty setting may cause extra DNS lookups to +# happen, which is the reason why this option is commented out in the +# default settings. +# MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS = !rt.njabl.org +.ifdef MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS +smtp_accept_max_nonmail_hosts = MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS +.endif + +# By default, exim forces a Sender: header containing the local +# account name at the local host name in all locally submitted messages +# that don't have the local account name at the local host name in the +# From: header, deletes any Sender: header present in the submitted +# message and forces the envelope sender of all locally submitted +# messages to the local account name at the local host name. +# The following settings allow local users to specify their own envelope sender +# in a locally submitted message. Sender: headers existing in a locally +# submitted message are not removed, and no automatic Sender: headers +# are added. These settings are fine for most hosts. +# If you run exim on a classical multi-user systems where all users +# have local mailboxes that can be reached via SMTP from the Internet +# with the local FQDN as the domain part of the address, you might want +# to disable the following three lines for traceability reasons. +.ifndef MAIN_FORCE_SENDER +local_from_check = false +local_sender_retain = true +untrusted_set_sender = * +.endif + + +# By default, Exim expects all envelope addresses to be fully qualified, that +# is, they must contain both a local part and a domain. Configure exim +# to accept unqualified addresses from certain hosts. When this is done, +# unqualified addresses are qualified using the settings of qualify_domain +# and/or qualify_recipient (see above). +# sender_unqualified_hosts = +# recipient_unqualified_hosts = + + +# Configure Exim to support the "percent hack" for certain domains. +# The "percent hack" is the feature by which mail addressed to x%y@z +# (where z is one of the domains listed) is locally rerouted to x@y +# and sent on. If z is not one of the "percent hack" domains, x%y is +# treated as an ordinary local part. The percent hack is rarely needed +# nowadays but frequently abused. You should not enable it unless you +# are sure that you really need it. +# percent_hack_domains = + + +# Bounce handling +.ifndef MAIN_IGNORE_BOUNCE_ERRORS_AFTER +MAIN_IGNORE_BOUNCE_ERRORS_AFTER = 2d +.endif +ignore_bounce_errors_after = MAIN_IGNORE_BOUNCE_ERRORS_AFTER + +.ifndef MAIN_TIMEOUT_FROZEN_AFTER +MAIN_TIMEOUT_FROZEN_AFTER = 7d +.endif +timeout_frozen_after = MAIN_TIMEOUT_FROZEN_AFTER + +.ifndef MAIN_FREEZE_TELL +MAIN_FREEZE_TELL = postmaster +.endif +freeze_tell = MAIN_FREEZE_TELL + + +# Define spool directory +.ifndef SPOOLDIR +SPOOLDIR = /var/spool/exim4 +.endif +spool_directory = SPOOLDIR + + +# trusted users can set envelope-from to arbitrary values +.ifndef MAIN_TRUSTED_USERS +MAIN_TRUSTED_USERS = uucp +.endif +trusted_users = MAIN_TRUSTED_USERS +.ifdef MAIN_TRUSTED_GROUPS +trusted_groups = MAIN_TRUSTED_GROUPS +.endif + + +# users in admin group can do many other things +# admin_groups = + + +# SMTP Banner. The example includes the Debian version in the SMTP dialog +# MAIN_SMTP_BANNER = "${primary_hostname} ESMTP Exim ${version_number} (Debian package MAIN_PACKAGE_VERSION) ${tod_full}" +# smtp_banner = $smtp_active_hostname ESMTP Exim $version_number $tod_full + +.ifdef MAIN_KEEP_ENVIRONMENT +keep_environment = MAIN_KEEP_ENVIRONMENT +.else +# set option to empty value to avoid warning. +keep_environment = +.endif +.ifdef MAIN_ADD_ENVIRONMENT +add_environment = MAIN_ADD_ENVIRONMENT +.endif diff --git a/exim4/conf.d/main/03_exim4-config_tlsoptions b/exim4/conf.d/main/03_exim4-config_tlsoptions new file mode 100644 index 00000000..86299e16 --- /dev/null +++ b/exim4/conf.d/main/03_exim4-config_tlsoptions @@ -0,0 +1,85 @@ + +### main/03_exim4-config_tlsoptions +################################# + +# TLS/SSL configuration for exim as an SMTP server. +# See /usr/share/doc/exim4-base/README.Debian.gz for explanations. + +.ifdef MAIN_TLS_ENABLE +# Defines what hosts to 'advertise' STARTTLS functionality to. The +# default, *, will advertise to all hosts that connect with EHLO. +.ifndef MAIN_TLS_ADVERTISE_HOSTS +MAIN_TLS_ADVERTISE_HOSTS = * +.endif +tls_advertise_hosts = MAIN_TLS_ADVERTISE_HOSTS + + +# Full paths to Certificate and Private Key. The Private Key file +# must be kept 'secret' and should be owned by root.Debian-exim mode +# 640 (-rw-r-----). exim-gencert takes care of these prerequisites. +# Normally, exim4 looks for certificate and key in different files: +# MAIN_TLS_CERTIFICATE - path to certificate file, +# CONFDIR/exim.crt if unset +# MAIN_TLS_PRIVATEKEY - path to private key file +# CONFDIR/exim.key if unset +# You can also configure exim to look for certificate and key in the +# same file, set MAIN_TLS_CERTKEY to that file to enable. This takes +# precedence over all other settings regarding certificate and key file. +.ifdef MAIN_TLS_CERTKEY +tls_certificate = MAIN_TLS_CERTKEY +.else +.ifndef MAIN_TLS_CERTIFICATE +MAIN_TLS_CERTIFICATE = CONFDIR/exim.crt +.endif +tls_certificate = MAIN_TLS_CERTIFICATE + +.ifndef MAIN_TLS_PRIVATEKEY +MAIN_TLS_PRIVATEKEY = CONFDIR/exim.key +.endif +tls_privatekey = MAIN_TLS_PRIVATEKEY +.endif + +# Pointer to the CA Certificates against which client certificates are +# checked. This is controlled by the `tls_verify_hosts' and +# `tls_try_verify_hosts' lists below. +# If you want to check server certificates, you need to add an +# tls_verify_certificates statement to the smtp transport. +# /etc/ssl/certs/ca-certificates.crt is generated by +# the "ca-certificates" package's update-ca-certificates(8) command. +.ifndef MAIN_TLS_VERIFY_CERTIFICATES +MAIN_TLS_VERIFY_CERTIFICATES = ${if exists{/etc/ssl/certs/ca-certificates.crt}\ + {/etc/ssl/certs/ca-certificates.crt}\ + {/dev/null}} +.endif +tls_verify_certificates = MAIN_TLS_VERIFY_CERTIFICATES + + +# A list of hosts which are constrained by `tls_verify_certificates'. A host +# that matches `tls_verify_host' must present a certificate that is +# verifyable through `tls_verify_certificates' in order to be accepted as an +# SMTP client. If it does not, the connection is aborted. +.ifdef MAIN_TLS_VERIFY_HOSTS +tls_verify_hosts = MAIN_TLS_VERIFY_HOSTS +.endif + +# A weaker form of checking: if a client matches `tls_try_verify_hosts' (but +# not `tls_verify_hosts'), request a certificate and check it against +# `tls_verify_certificates' but do not abort the connection if there is no +# certificate or if the certificate presented does not match. (This +# condition can be tested for in ACLs through `verify = certificate') +# By default, this check is done for all hosts. It is known that some +# clients (including incredimail's version downloadable in February +# 2008) choke on this. To disable, set MAIN_TLS_TRY_VERIFY_HOSTS to an +# empty value. +.ifdef MAIN_TLS_TRY_VERIFY_HOSTS +tls_try_verify_hosts = MAIN_TLS_TRY_VERIFY_HOSTS +.endif + +.ifdef _HAVE_GNUTLS +tls_dhparam = historic +.endif + +.else +# Don't advertise TLS if MAIN_TLS_ENABLE is not set. +tls_advertise_hosts = +.endif diff --git a/exim4/conf.d/main/90_exim4-config_log_selector b/exim4/conf.d/main/90_exim4-config_log_selector new file mode 100644 index 00000000..685c404c --- /dev/null +++ b/exim4/conf.d/main/90_exim4-config_log_selector @@ -0,0 +1,10 @@ + +### main/90_exim4-config_log_selector +################################# + +# uncomment this for debugging +# MAIN_LOG_SELECTOR == MAIN_LOG_SELECTOR +all -subject -arguments + +.ifdef MAIN_LOG_SELECTOR +log_selector = MAIN_LOG_SELECTOR +.endif diff --git a/exim4/conf.d/retry/00_exim4-config_header b/exim4/conf.d/retry/00_exim4-config_header new file mode 100644 index 00000000..e2bb4a48 --- /dev/null +++ b/exim4/conf.d/retry/00_exim4-config_header @@ -0,0 +1,7 @@ + +###################################################################### +# RETRY CONFIGURATION # +###################################################################### + +begin retry + diff --git a/exim4/conf.d/retry/30_exim4-config b/exim4/conf.d/retry/30_exim4-config new file mode 100644 index 00000000..52b002f3 --- /dev/null +++ b/exim4/conf.d/retry/30_exim4-config @@ -0,0 +1,19 @@ + +### retry/30_exim4-config +################################# + +# This single retry rule applies to all domains and all errors. It specifies +# retries every 15 minutes for 2 hours, then increasing retry intervals, +# starting at 1 hour and increasing each time by a factor of 1.5, up to 16 +# hours, then retries every 6 hours until 4 days have passed since the first +# failed delivery. + +# Please note that these rules only limit the frequency of retries, the +# effective retry-time depends on the frequency of queue-running, too. +# See QUEUEINTERVAL in /etc/default/exim4. + +# Address or Domain Error Retries +# ----------------- ----- ------- + +* * F,2h,15m; G,16h,1h,1.5; F,4d,6h + diff --git a/exim4/conf.d/rewrite/00_exim4-config_header b/exim4/conf.d/rewrite/00_exim4-config_header new file mode 100644 index 00000000..a32db174 --- /dev/null +++ b/exim4/conf.d/rewrite/00_exim4-config_header @@ -0,0 +1,7 @@ + +###################################################################### +# REWRITE CONFIGURATION # +###################################################################### + +begin rewrite + diff --git a/exim4/conf.d/rewrite/31_exim4-config_rewriting b/exim4/conf.d/rewrite/31_exim4-config_rewriting new file mode 100644 index 00000000..b7415b6c --- /dev/null +++ b/exim4/conf.d/rewrite/31_exim4-config_rewriting @@ -0,0 +1,16 @@ + +### rewrite/31_exim4-config_rewriting +################################# + +# This rewriting rule is particularly useful for dialup users who +# don't have their own domain, but could be useful for anyone. +# It looks up the real address of all local users in a file +.ifndef NO_EAA_REWRITE_REWRITE +*@+local_domains "${lookup{${local_part}}lsearch{/etc/email-addresses}\ + {$value}fail}" Ffrs +# identical rewriting rule for /etc/mailname +*@ETC_MAILNAME "${lookup{${local_part}}lsearch{/etc/email-addresses}\ + {$value}fail}" Ffrs +.endif + + diff --git a/exim4/conf.d/router/00_exim4-config_header b/exim4/conf.d/router/00_exim4-config_header new file mode 100644 index 00000000..531e21f1 --- /dev/null +++ b/exim4/conf.d/router/00_exim4-config_header @@ -0,0 +1,11 @@ + +###################################################################### +# ROUTERS CONFIGURATION # +# Specifies how addresses are handled # +###################################################################### +# THE ORDER IN WHICH THE ROUTERS ARE DEFINED IS IMPORTANT! # +# An address is passed to each router in turn until it is accepted. # +###################################################################### + +begin routers + diff --git a/exim4/conf.d/router/100_exim4-config_domain_literal b/exim4/conf.d/router/100_exim4-config_domain_literal new file mode 100644 index 00000000..d37fea6f --- /dev/null +++ b/exim4/conf.d/router/100_exim4-config_domain_literal @@ -0,0 +1,18 @@ + +### router/100_exim4-config_domain_literal +################################# + +# This router handles e-mail addresses in "domain literal" form like +# . The RFCs require this facility, but it is disabled +# in the default config since it is rarely used and frequently abused. +# Domain literal support also needs to be enabled in the main config, +# which is automatically done if you use the enable macro +# MAIN_ALLOW_DOMAIN_LITERALS. + +.ifdef MAIN_ALLOW_DOMAIN_LITERALS +domain_literal: + debug_print = "R: domain_literal for $local_part@$domain" + driver = ipliteral + domains = ! +local_domains + transport = remote_smtp +.endif diff --git a/exim4/conf.d/router/150_exim4-config_hubbed_hosts b/exim4/conf.d/router/150_exim4-config_hubbed_hosts new file mode 100644 index 00000000..a0fcb267 --- /dev/null +++ b/exim4/conf.d/router/150_exim4-config_hubbed_hosts @@ -0,0 +1,18 @@ + +# router/150_exim4-config_hubbed_hosts +################################# + +# route specific domains manually. +# +# see exim4-config_files(5) and spec.txt chapter 20.3 through 20.7 for +# more detailed documentation. + +hubbed_hosts: + debug_print = "R: hubbed_hosts for $domain" + driver = manualroute + domains = "${if exists{CONFDIR/hubbed_hosts}\ + {partial-lsearch;CONFDIR/hubbed_hosts}\ + fail}" + same_domain_copy_routing = yes + route_data = ${lookup{$domain}partial-lsearch{CONFDIR/hubbed_hosts}} + transport = remote_smtp diff --git a/exim4/conf.d/router/200_exim4-config_primary b/exim4/conf.d/router/200_exim4-config_primary new file mode 100644 index 00000000..7681d910 --- /dev/null +++ b/exim4/conf.d/router/200_exim4-config_primary @@ -0,0 +1,90 @@ + +### router/200_exim4-config_primary +################################# +# This file holds the primary router, responsible for nonlocal mails + +.ifdef DCconfig_internet +# configtype=internet +# +# deliver mail to the recipient if recipient domain is a domain we +# relay for. We do not ignore any target hosts here since delivering to +# a site local or even a link local address might be wanted here, and if +# such an address has found its way into the MX record of such a domain, +# the local admin is probably in a place where that broken MX record +# could be fixed. + +dnslookup_relay_to_domains: + debug_print = "R: dnslookup_relay_to_domains for $local_part@$domain" + driver = dnslookup + domains = ! +local_domains : +relay_to_domains + transport = remote_smtp + same_domain_copy_routing = yes + no_more + +# deliver mail directly to the recipient. This router is only reached +# for domains that we do not relay for. Since we most probably can't +# have broken MX records pointing to site local or link local IP +# addresses fixed, we ignore target hosts pointing to these addresses. + +dnslookup: + debug_print = "R: dnslookup for $local_part@$domain" + driver = dnslookup + domains = ! +local_domains + transport = remote_smtp + same_domain_copy_routing = yes + # ignore private rfc1918 and APIPA addresses + ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8 : 192.168.0.0/16 :\ + 172.16.0.0/12 : 10.0.0.0/8 : 169.254.0.0/16 :\ + 255.255.255.255 + no_more + +.endif + + +.ifdef DCconfig_local +# configtype=local +# +# Stand-alone system, so generate an error for mail to a non-local domain +nonlocal: + debug_print = "R: nonlocal for $local_part@$domain" + driver = redirect + domains = ! +local_domains + allow_fail + data = :fail: Mailing to remote domains not supported + no_more + +.endif + + +.ifdef DCconfig_smarthost DCconfig_satellite +# configtype=smarthost or configtype=satellite +# +# Send all non-local mail to a single other machine (smarthost). +# +# This means _ALL_ non-local mail goes to the smarthost. This will most +# probably not do what you want for domains that are listed in +# relay_domains. The most typical use for relay_domains is to control +# relaying for incoming e-mail on secondary MX hosts. In that case, +# it doesn't make sense to send the mail to the smarthost since the +# smarthost will probably send the message right back here, causing a +# loop. +# +# If you want to use a smarthost while being secondary MX for some +# domains, you'll need to copy the dnslookup_relay_to_domains router +# here so that mail to relay_domains is handled separately. + +smarthost: + debug_print = "R: smarthost for $local_part@$domain" + driver = manualroute + domains = ! +local_domains + transport = remote_smtp_smarthost + route_list = * DCsmarthost byname + host_find_failed = ignore + same_domain_copy_routing = yes + no_more + +.endif + + +# The "no_more" above means that all later routers are for +# domains in the local_domains list, i.e. just like Exim 3 directors. diff --git a/exim4/conf.d/router/300_exim4-config_real_local b/exim4/conf.d/router/300_exim4-config_real_local new file mode 100644 index 00000000..34ea2820 --- /dev/null +++ b/exim4/conf.d/router/300_exim4-config_real_local @@ -0,0 +1,22 @@ + +### router/300_exim4-config_real_local +################################# + +# This router allows reaching a local user while avoiding local +# processing. This can be used to inform a user of a broken .forward +# file, for example. The userforward router does this. + +COND_LOCAL_SUBMITTER = "\ + ${if match_ip{$sender_host_address}{:@[]}\ + {1}{0}\ + }" + +real_local: + debug_print = "R: real_local for $local_part@$domain" + driver = accept + domains = +local_domains + condition = COND_LOCAL_SUBMITTER + local_part_prefix = real- + check_local_user + transport = LOCAL_DELIVERY + diff --git a/exim4/conf.d/router/400_exim4-config_system_aliases b/exim4/conf.d/router/400_exim4-config_system_aliases new file mode 100644 index 00000000..f5f5f1c2 --- /dev/null +++ b/exim4/conf.d/router/400_exim4-config_system_aliases @@ -0,0 +1,44 @@ + +### router/400_exim4-config_system_aliases +################################# + +# This router handles aliasing using a traditional /etc/aliases file. +# +##### NB You must ensure that /etc/aliases exists. It used to be the case +##### NB that every Unix had that file, because it was the Sendmail default. +##### NB These days, there are systems that don't have it. Your aliases +##### NB file should at least contain an alias for "postmaster". +# +# This router handles the local part in a case-insensitive way which +# satisfies the RFCs requirement that postmaster be reachable regardless +# of case. If you decide to handle /etc/aliases in a caseful way, you +# need to make arrangements for a caseless postmaster. +# +# Delivery to arbitrary directories, files, and piping to programs in +# /etc/aliases is disabled per default. +# If that is a problem for you, see +# /usr/share/doc/exim4-base/README.Debian.gz +# for explanation and some workarounds. + +system_aliases: + debug_print = "R: system_aliases for $local_part@$domain" + driver = redirect + domains = +local_domains + allow_fail + allow_defer + data = ${lookup{$local_part}lsearch{/etc/aliases}} + .ifdef SYSTEM_ALIASES_USER + user = SYSTEM_ALIASES_USER + .endif + .ifdef SYSTEM_ALIASES_GROUP + group = SYSTEM_ALIASES_GROUP + .endif + .ifdef SYSTEM_ALIASES_FILE_TRANSPORT + file_transport = SYSTEM_ALIASES_FILE_TRANSPORT + .endif + .ifdef SYSTEM_ALIASES_PIPE_TRANSPORT + pipe_transport = SYSTEM_ALIASES_PIPE_TRANSPORT + .endif + .ifdef SYSTEM_ALIASES_DIRECTORY_TRANSPORT + directory_transport = SYSTEM_ALIASES_DIRECTORY_TRANSPORT + .endif diff --git a/exim4/conf.d/router/500_exim4-config_hubuser b/exim4/conf.d/router/500_exim4-config_hubuser new file mode 100644 index 00000000..1884b21d --- /dev/null +++ b/exim4/conf.d/router/500_exim4-config_hubuser @@ -0,0 +1,31 @@ + +### router/500_exim4-config_hubuser +################################# + +.ifdef DCconfig_satellite +# This router is only used for configtype=satellite. +# It takes care to route all mail targeted to +# to the host where we read our mail +# +hub_user: + debug_print = "R: hub_user for $local_part@$domain" + driver = redirect + domains = +local_domains + data = ${local_part}@DCreadhost + check_local_user + +# Grab the redirected mail and deliver it. +# This is a duplicate of the smarthost router, needed because +# DCreadhost might end up as part of +local_domains +hub_user_smarthost: + debug_print = "R: hub_user_smarthost for $local_part@$domain" + driver = manualroute + domains = DCreadhost + transport = remote_smtp_smarthost + route_list = * DCsmarthost byname + host_find_failed = ignore + same_domain_copy_routing = yes + check_local_user +.endif + + diff --git a/exim4/conf.d/router/600_exim4-config_userforward b/exim4/conf.d/router/600_exim4-config_userforward new file mode 100644 index 00000000..59259ca8 --- /dev/null +++ b/exim4/conf.d/router/600_exim4-config_userforward @@ -0,0 +1,51 @@ + +### router/600_exim4-config_userforward +################################# + +# This router handles forwarding using traditional .forward files in users' +# home directories. It also allows mail filtering with a forward file +# starting with the string "# Exim filter" or "# Sieve filter". +# +# The no_verify setting means that this router is skipped when Exim is +# verifying addresses. Similarly, no_expn means that this router is skipped if +# Exim is processing an EXPN command. +# +# The check_ancestor option means that if the forward file generates an +# address that is an ancestor of the current one, the current one gets +# passed on instead. This covers the case where A is aliased to B and B +# has a .forward file pointing to A. +# +# The four transports specified at the end are those that are used when +# forwarding generates a direct delivery to a directory, or a file, or to a +# pipe, or sets up an auto-reply, respectively. +# +userforward: + debug_print = "R: userforward for $local_part@$domain" + driver = redirect + domains = +local_domains + check_local_user + file = $home/.forward + require_files = $local_part:$home/.forward + no_verify + no_expn + check_ancestor + allow_filter + forbid_smtp_code = true + directory_transport = address_directory + file_transport = address_file + pipe_transport = address_pipe + reply_transport = address_reply + skip_syntax_errors + syntax_errors_to = real-$local_part@$domain + syntax_errors_text = \ + This is an automatically generated message. An error has\n\ + been found in your .forward file. Details of the error are\n\ + reported below. While this error persists, you will receive\n\ + a copy of this message for every message that is addressed\n\ + to you. If your .forward file is a filter file, or if it is\n\ + a non-filter file containing no valid forwarding addresses,\n\ + a copy of each incoming message will be put in your normal\n\ + mailbox. If a non-filter file contains at least one valid\n\ + forwarding address, forwarding to the valid addresses will\n\ + happen, and those will be the only deliveries that occur. + diff --git a/exim4/conf.d/router/700_exim4-config_procmail b/exim4/conf.d/router/700_exim4-config_procmail new file mode 100644 index 00000000..8d827c7c --- /dev/null +++ b/exim4/conf.d/router/700_exim4-config_procmail @@ -0,0 +1,15 @@ + +procmail: + debug_print = "R: procmail for $local_part@$domain" + driver = accept + domains = +local_domains + check_local_user + transport = procmail_pipe + # emulate OR with "if exists"-expansion + require_files = ${local_part}:\ + ${if exists{/etc/procmailrc}\ + {/etc/procmailrc}{${home}/.procmailrc}}:\ + +/usr/bin/procmail + no_verify + no_expn + diff --git a/exim4/conf.d/router/800_exim4-config_maildrop b/exim4/conf.d/router/800_exim4-config_maildrop new file mode 100644 index 00000000..0c57fc6a --- /dev/null +++ b/exim4/conf.d/router/800_exim4-config_maildrop @@ -0,0 +1,14 @@ + +### router/800_exim4-config_maildrop +################################# + +maildrop: + debug_print = "R: maildrop for $local_part@$domain" + driver = accept + domains = +local_domains + check_local_user + transport = maildrop_pipe + require_files = ${local_part}:${home}/.mailfilter:+/usr/bin/maildrop + no_verify + no_expn + diff --git a/exim4/conf.d/router/850_exim4-config_lowuid b/exim4/conf.d/router/850_exim4-config_lowuid new file mode 100644 index 00000000..43741c65 --- /dev/null +++ b/exim4/conf.d/router/850_exim4-config_lowuid @@ -0,0 +1,29 @@ + +### router/850_exim4-config_lowuid +################################# + +.ifndef FIRST_USER_ACCOUNT_UID +FIRST_USER_ACCOUNT_UID = 0 +.endif + +.ifndef DEFAULT_SYSTEM_ACCOUNT_ALIAS +DEFAULT_SYSTEM_ACCOUNT_ALIAS = :fail: no mail to system accounts +.endif + +COND_SYSTEM_USER_AND_REMOTE_SUBMITTER = "\ + ${if and{{! match_ip{$sender_host_address}{:@[]}}\ + {<{$local_user_uid}{FIRST_USER_ACCOUNT_UID}}}\ + {1}{0}\ + }" + +lowuid_aliases: + debug_print = "R: lowuid_aliases for $local_part@$domain (UID $local_user_uid)" + check_local_user + driver = redirect + allow_fail + domains = +local_domains + condition = COND_SYSTEM_USER_AND_REMOTE_SUBMITTER + data = ${if exists{CONFDIR/lowuid-aliases}\ + {${lookup{$local_part}lsearch{CONFDIR/lowuid-aliases}\ + {$value}{DEFAULT_SYSTEM_ACCOUNT_ALIAS}}}\ + {DEFAULT_SYSTEM_ACCOUNT_ALIAS}} diff --git a/exim4/conf.d/router/900_exim4-config_local_user b/exim4/conf.d/router/900_exim4-config_local_user new file mode 100644 index 00000000..423c7296 --- /dev/null +++ b/exim4/conf.d/router/900_exim4-config_local_user @@ -0,0 +1,15 @@ + +### router/900_exim4-config_local_user +################################# + +# This router matches local user mailboxes. If the router fails, the error +# message is "Unknown user". + +local_user: + debug_print = "R: local_user for $local_part@$domain" + driver = accept + domains = +local_domains + check_local_user + local_parts = ! root + transport = LOCAL_DELIVERY + cannot_route_message = Unknown user diff --git a/exim4/conf.d/router/mmm_mail4root b/exim4/conf.d/router/mmm_mail4root new file mode 100644 index 00000000..88017ba2 --- /dev/null +++ b/exim4/conf.d/router/mmm_mail4root @@ -0,0 +1,17 @@ + +### router/mmm_mail4root +################################# +# deliver mail addressed to root to /var/mail/mail as user mail:mail +# if it was not redirected in /etc/aliases or by other means +# Exim cannot deliver as root since 4.24 (FIXED_NEVER_USERS) + +mail4root: + debug_print = "R: mail4root for $local_part@$domain" + driver = redirect + domains = +local_domains + data = /var/mail/mail + file_transport = address_file + local_parts = root + user = mail + group = mail + diff --git a/exim4/conf.d/transport/00_exim4-config_header b/exim4/conf.d/transport/00_exim4-config_header new file mode 100644 index 00000000..48e45da8 --- /dev/null +++ b/exim4/conf.d/transport/00_exim4-config_header @@ -0,0 +1,13 @@ + +###################################################################### +# TRANSPORTS CONFIGURATION # +###################################################################### +# ORDER DOES NOT MATTER # +# Only one appropriate transport is called for each delivery. # +###################################################################### + +# A transport is used only when referenced from a router that successfully +# handles an address. + +begin transports + diff --git a/exim4/conf.d/transport/10_exim4-config_transport-macros b/exim4/conf.d/transport/10_exim4-config_transport-macros new file mode 100644 index 00000000..449fb319 --- /dev/null +++ b/exim4/conf.d/transport/10_exim4-config_transport-macros @@ -0,0 +1,16 @@ + +### transport/10_exim4-config_transport-macros +################################# + +.ifdef HIDE_MAILNAME +REMOTE_SMTP_HEADERS_REWRITE=*@+local_domains $1@DCreadhost frs : *@ETC_MAILNAME $1@DCreadhost frs +REMOTE_SMTP_RETURN_PATH=${if match_domain{$sender_address_domain}{+local_domains}{${sender_address_local_part}@DCreadhost}{${if match_domain{$sender_address_domain}{ETC_MAILNAME}{${sender_address_local_part}@DCreadhost}fail}}} +.endif + +.ifdef REMOTE_SMTP_HELO_FROM_DNS +.ifdef REMOTE_SMTP_HELO_DATA +REMOTE_SMTP_HELO_DATA==${lookup dnsdb {ptr=$sending_ip_address}{$value}{$primary_hostname}} +.else +REMOTE_SMTP_HELO_DATA=${lookup dnsdb {ptr=$sending_ip_address}{$value}{$primary_hostname}} +.endif +.endif diff --git a/exim4/conf.d/transport/30_exim4-config_address_file b/exim4/conf.d/transport/30_exim4-config_address_file new file mode 100644 index 00000000..82b55e27 --- /dev/null +++ b/exim4/conf.d/transport/30_exim4-config_address_file @@ -0,0 +1,11 @@ + +# This transport is used for handling deliveries directly to files that are +# generated by aliasing or forwarding. +# +address_file: + debug_print = "T: address_file for $local_part@$domain" + driver = appendfile + delivery_date_add + envelope_to_add + return_path_add + diff --git a/exim4/conf.d/transport/30_exim4-config_address_pipe b/exim4/conf.d/transport/30_exim4-config_address_pipe new file mode 100644 index 00000000..c5f1828c --- /dev/null +++ b/exim4/conf.d/transport/30_exim4-config_address_pipe @@ -0,0 +1,10 @@ + +# This transport is used for handling pipe deliveries generated by +# .forward files. If the commands fails and produces any output on standard +# output or standard error streams, the output is returned to the sender +# of the message as a delivery error. +address_pipe: + debug_print = "T: address_pipe for $local_part@$domain" + driver = pipe + return_fail_output + diff --git a/exim4/conf.d/transport/30_exim4-config_address_reply b/exim4/conf.d/transport/30_exim4-config_address_reply new file mode 100644 index 00000000..b2b88625 --- /dev/null +++ b/exim4/conf.d/transport/30_exim4-config_address_reply @@ -0,0 +1,8 @@ + +# This transport is used for handling autoreplies generated by the filtering +# option of the userforward router. +# +address_reply: + debug_print = "T: autoreply for $local_part@$domain" + driver = autoreply + diff --git a/exim4/conf.d/transport/30_exim4-config_mail_spool b/exim4/conf.d/transport/30_exim4-config_mail_spool new file mode 100644 index 00000000..21dfae4a --- /dev/null +++ b/exim4/conf.d/transport/30_exim4-config_mail_spool @@ -0,0 +1,17 @@ + +### transport/30_exim4-config_mail_spool + +# This transport is used for local delivery to user mailboxes in traditional +# BSD mailbox format. +# +mail_spool: + debug_print = "T: appendfile for $local_part@$domain" + driver = appendfile + file = /var/mail/$local_part + delivery_date_add + envelope_to_add + return_path_add + group = mail + mode = 0660 + mode_fail_narrower = false + diff --git a/exim4/conf.d/transport/30_exim4-config_maildir_home b/exim4/conf.d/transport/30_exim4-config_maildir_home new file mode 100644 index 00000000..a872accf --- /dev/null +++ b/exim4/conf.d/transport/30_exim4-config_maildir_home @@ -0,0 +1,41 @@ + +### transport/30_exim4-config_maildir_home +################################# + +# Use this instead of mail_spool if you want to to deliver to Maildir in +# home-directory - change the definition of LOCAL_DELIVERY +# +maildir_home: + debug_print = "T: maildir_home for $local_part@$domain" + driver = appendfile + .ifdef MAILDIR_HOME_MAILDIR_LOCATION + directory = MAILDIR_HOME_MAILDIR_LOCATION + .else + directory = $home/Maildir + .endif + .ifdef MAILDIR_HOME_CREATE_DIRECTORY + create_directory + .endif + .ifdef MAILDIR_HOME_CREATE_FILE + create_file = MAILDIR_HOME_CREATE_FILE + .endif + delivery_date_add + envelope_to_add + return_path_add + maildir_format + .ifdef MAILDIR_HOME_DIRECTORY_MODE + directory_mode = MAILDIR_HOME_DIRECTORY_MODE + .else + directory_mode = 0700 + .endif + .ifdef MAILDIR_HOME_MODE + mode = MAILDIR_HOME_MODE + .else + mode = 0600 + .endif + mode_fail_narrower = false + # This transport always chdirs to $home before trying to deliver. If + # $home is not accessible, this chdir fails and prevents delivery. + # If you are in a setup where home directories might not be + # accessible, uncomment the current_directory line below. + # current_directory = / diff --git a/exim4/conf.d/transport/30_exim4-config_maildrop_pipe b/exim4/conf.d/transport/30_exim4-config_maildrop_pipe new file mode 100644 index 00000000..3bd89246 --- /dev/null +++ b/exim4/conf.d/transport/30_exim4-config_maildrop_pipe @@ -0,0 +1,12 @@ + +maildrop_pipe: + debug_print = "T: maildrop_pipe for $local_part@$domain" + driver = pipe + path = "/bin:/usr/bin:/usr/local/bin" + command = "/usr/bin/maildrop" + message_prefix = + message_suffix = + return_path_add + delivery_date_add + envelope_to_add + diff --git a/exim4/conf.d/transport/30_exim4-config_procmail_pipe b/exim4/conf.d/transport/30_exim4-config_procmail_pipe new file mode 100644 index 00000000..5fb03ff7 --- /dev/null +++ b/exim4/conf.d/transport/30_exim4-config_procmail_pipe @@ -0,0 +1,10 @@ + +procmail_pipe: + debug_print = "T: procmail_pipe for $local_part@$domain" + driver = pipe + path = "/bin:/usr/bin:/usr/local/bin" + command = "/usr/bin/procmail" + return_path_add + delivery_date_add + envelope_to_add + diff --git a/exim4/conf.d/transport/30_exim4-config_remote_smtp b/exim4/conf.d/transport/30_exim4-config_remote_smtp new file mode 100644 index 00000000..42bd601d --- /dev/null +++ b/exim4/conf.d/transport/30_exim4-config_remote_smtp @@ -0,0 +1,53 @@ + +### transport/30_exim4-config_remote_smtp +################################# +# This transport is used for delivering messages over SMTP connections. +# Refuse to send any message with over-long lines, which could have +# been received other than via SMTP. The use of message_size_limit to +# enforce this is a red herring. + +remote_smtp: + debug_print = "T: remote_smtp for $local_part@$domain" + driver = smtp +.ifndef IGNORE_SMTP_LINE_LENGTH_LIMIT + message_size_limit = ${if > {$max_received_linelength}{998} {1}{0}} +.endif +.ifdef REMOTE_SMTP_HOSTS_AVOID_TLS + hosts_avoid_tls = REMOTE_SMTP_HOSTS_AVOID_TLS +.endif +.ifdef REMOTE_SMTP_HEADERS_REWRITE + headers_rewrite = REMOTE_SMTP_HEADERS_REWRITE +.endif +.ifdef REMOTE_SMTP_RETURN_PATH + return_path = REMOTE_SMTP_RETURN_PATH +.endif +.ifdef REMOTE_SMTP_HELO_DATA + helo_data=REMOTE_SMTP_HELO_DATA +.endif +.ifdef DKIM_DOMAIN +dkim_domain = DKIM_DOMAIN +.endif +.ifdef DKIM_SELECTOR +dkim_selector = DKIM_SELECTOR +.endif +.ifdef DKIM_PRIVATE_KEY +dkim_private_key = DKIM_PRIVATE_KEY +.endif +.ifdef DKIM_CANON +dkim_canon = DKIM_CANON +.endif +.ifdef DKIM_STRICT +dkim_strict = DKIM_STRICT +.endif +.ifdef DKIM_SIGN_HEADERS +dkim_sign_headers = DKIM_SIGN_HEADERS +.endif +.ifdef TLS_DH_MIN_BITS +tls_dh_min_bits = TLS_DH_MIN_BITS +.endif +.ifdef REMOTE_SMTP_TLS_CERTIFICATE +tls_certificate = REMOTE_SMTP_TLS_CERTIFICATE +.endif +.ifdef REMOTE_SMTP_PRIVATEKEY +tls_privatekey = REMOTE_SMTP_PRIVATEKEY +.endif diff --git a/exim4/conf.d/transport/30_exim4-config_remote_smtp_smarthost b/exim4/conf.d/transport/30_exim4-config_remote_smtp_smarthost new file mode 100644 index 00000000..9c18305b --- /dev/null +++ b/exim4/conf.d/transport/30_exim4-config_remote_smtp_smarthost @@ -0,0 +1,47 @@ + +### transport/30_exim4-config_remote_smtp_smarthost +################################# + +# This transport is used for delivering messages over SMTP connections +# to a smarthost. The local host tries to authenticate. +# This transport is used for smarthost and satellite configurations. +# Refuse to send any messsage with over-long lines, which could have +# been received other than via SMTP. The use of message_size_limit to +# enforce this is a red herring. + +remote_smtp_smarthost: + debug_print = "T: remote_smtp_smarthost for $local_part@$domain" + driver = smtp +.ifndef IGNORE_SMTP_LINE_LENGTH_LIMIT + message_size_limit = ${if > {$max_received_linelength}{998} {1}{0}} +.endif + hosts_try_auth = <; ${if exists{CONFDIR/passwd.client} \ + {\ + ${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$host_address}}\ + }\ + {} \ + } +.ifdef REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS + hosts_avoid_tls = REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS +.endif +.ifdef REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS + hosts_require_tls = REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS +.endif +.ifdef REMOTE_SMTP_HEADERS_REWRITE + headers_rewrite = REMOTE_SMTP_HEADERS_REWRITE +.endif +.ifdef REMOTE_SMTP_RETURN_PATH + return_path = REMOTE_SMTP_RETURN_PATH +.endif +.ifdef REMOTE_SMTP_HELO_DATA + helo_data=REMOTE_SMTP_HELO_DATA +.endif +.ifdef TLS_DH_MIN_BITS +tls_dh_min_bits = TLS_DH_MIN_BITS +.endif +.ifdef REMOTE_SMTP_SMARTHOST_TLS_CERTIFICATE +tls_certificate = REMOTE_SMTP_SMARTHOST_TLS_CERTIFICATE +.endif +.ifdef REMOTE_SMTP_SMARTHOST_PRIVATEKEY +tls_privatekey = REMOTE_SMTP_SMARTHOST_PRIVATEKEY +.endif diff --git a/exim4/conf.d/transport/35_exim4-config_address_directory b/exim4/conf.d/transport/35_exim4-config_address_directory new file mode 100644 index 00000000..6861426b --- /dev/null +++ b/exim4/conf.d/transport/35_exim4-config_address_directory @@ -0,0 +1,14 @@ +# This transport is used for handling file addresses generated by alias +# or .forward files if the path ends in "/", which causes it to be treated +# as a directory name rather than a file name. + +address_directory: + debug_print = "T: address_directory for $local_part@$domain" + driver = appendfile + delivery_date_add + envelope_to_add + return_path_add + check_string = "" + escape_string = "" + maildir_format + diff --git a/exim4/exim4.conf.template b/exim4/exim4.conf.template new file mode 100644 index 00000000..1d993935 --- /dev/null +++ b/exim4/exim4.conf.template @@ -0,0 +1,2107 @@ +##################################################### +### main/01_exim4-config_listmacrosdefs +##################################################### +###################################################################### +# Runtime configuration file for Exim 4 (Debian Packaging) # +###################################################################### + +###################################################################### +# /etc/exim4/exim4.conf.template is only used with the non-split +# configuration scheme. +# /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs is only used +# with the split configuration scheme. +# If you find this comment anywhere else, somebody copied it there. +# Documentation about the Debian exim4 configuration scheme can be +# found in /usr/share/doc/exim4-base/README.Debian.gz. +###################################################################### + +###################################################################### +# MAIN CONFIGURATION SETTINGS # +###################################################################### + +# Just for reference and scripts. +# On Debian systems, the main binary is installed as exim4 to avoid +# conflicts with the exim 3 packages. +exim_path = /usr/sbin/exim4 + +# Macro defining the main configuration directory. +# We do not use absolute paths. +.ifndef CONFDIR +CONFDIR = /etc/exim4 +.endif + +# debconf-driven macro definitions get inserted after this line +UPEX4CmacrosUPEX4C = 1 + +# Create domain and host lists for relay control +# '@' refers to 'the name of the local host' + +# List of domains considered local for exim. Domains not listed here +# need to be deliverable remotely. +domainlist local_domains = MAIN_LOCAL_DOMAINS + +# List of recipient domains to relay _to_. Use this list if you're - +# for example - fallback MX or mail gateway for domains. +domainlist relay_to_domains = MAIN_RELAY_TO_DOMAINS + +# List of sender networks (IP addresses) to _unconditionally_ relay +# _for_. If you intend to be SMTP AUTH server, you do not need to enter +# anything here. +hostlist relay_from_hosts = MAIN_RELAY_NETS + + +# Decide which domain to use to add to all unqualified addresses. +# If MAIN_PRIMARY_HOSTNAME_AS_QUALIFY_DOMAIN is defined, the primary +# hostname is used. If not, but MAIN_QUALIFY_DOMAIN is set, the value +# of MAIN_QUALIFY_DOMAIN is used. If both macros are not defined, +# the first line of /etc/mailname is used. +.ifndef MAIN_PRIMARY_HOSTNAME_AS_QUALIFY_DOMAIN +.ifndef MAIN_QUALIFY_DOMAIN +qualify_domain = ETC_MAILNAME +.else +qualify_domain = MAIN_QUALIFY_DOMAIN +.endif +.endif + +# listen on all all interfaces? +.ifdef MAIN_LOCAL_INTERFACES +local_interfaces = MAIN_LOCAL_INTERFACES +.endif + +.ifndef LOCAL_DELIVERY +# The default transport, set in /etc/exim4/update-exim4.conf.conf, +# defaulting to mail_spool. See CONFDIR/conf.d/transport/ for possibilities +LOCAL_DELIVERY=mail_spool +.endif + +# The gecos field in /etc/passwd holds not only the name. see passwd(5). +gecos_pattern = ^([^,:]*) +gecos_name = $1 + +# define macros to be used in acl/30_exim4-config_check_rcpt to check +# recipient local parts for strange characters. + +# This macro definition really should be in +# acl/30_exim4-config_check_rcpt but cannot be there due to +# http://www.exim.org/bugzilla/show_bug.cgi?id=101 as of exim 4.62. + +# These macros are documented in acl/30_exim4-config_check_rcpt, +# can be changed here or overridden by a locally added configuration +# file as described in README.Debian section "Using Exim Macros to control +# the configuration". + +.ifndef CHECK_RCPT_LOCAL_LOCALPARTS +CHECK_RCPT_LOCAL_LOCALPARTS = ^[.] : ^.*[@%!/|`#&?] +.endif + +.ifndef CHECK_RCPT_REMOTE_LOCALPARTS +CHECK_RCPT_REMOTE_LOCALPARTS = ^[./|] : ^.*[@%!`#&?] : ^.*/\\.\\./ +.endif + +# always log tls_peerdn as we use TLS for outgoing connects by default +.ifndef MAIN_LOG_SELECTOR +MAIN_LOG_SELECTOR = +smtp_protocol_error +smtp_syntax_error +tls_certificate_verified +tls_peerdn +.endif +##################################################### +### end main/01_exim4-config_listmacrosdefs +##################################################### +##################################################### +### main/02_exim4-config_options +##################################################### + +### main/02_exim4-config_options +################################# + + +# Defines the access control list that is run when an +# SMTP MAIL command is received. +# +.ifndef MAIN_ACL_CHECK_MAIL +MAIN_ACL_CHECK_MAIL = acl_check_mail +.endif +acl_smtp_mail = MAIN_ACL_CHECK_MAIL + + +# Defines the access control list that is run when an +# SMTP RCPT command is received. +# +.ifndef MAIN_ACL_CHECK_RCPT +MAIN_ACL_CHECK_RCPT = acl_check_rcpt +.endif +acl_smtp_rcpt = MAIN_ACL_CHECK_RCPT + + +# Defines the access control list that is run when an +# SMTP DATA command is received. +# +.ifndef MAIN_ACL_CHECK_DATA +MAIN_ACL_CHECK_DATA = acl_check_data +.endif +acl_smtp_data = MAIN_ACL_CHECK_DATA + + +# Message size limit. The default (used when MESSAGE_SIZE_LIMIT +# is unset) is 50 MB +.ifdef MESSAGE_SIZE_LIMIT +message_size_limit = MESSAGE_SIZE_LIMIT +.endif + + +# If you are running exim4-daemon-heavy or a custom version of Exim that +# was compiled with the content-scanning extension, you can cause incoming +# messages to be automatically scanned for viruses. You have to modify the +# configuration in two places to set this up. The first of them is here, +# where you define the interface to your scanner. This example is typical +# for ClamAV; see the manual for details of what to set for other virus +# scanners. The second modification is in the acl_check_data access +# control list. + +# av_scanner = clamd:/var/run/clamav/clamd.ctl + + +# For spam scanning, there is a similar option that defines the interface to +# SpamAssassin. You do not need to set this if you are using the default, which +# is shown in this commented example. As for virus scanning, you must also +# modify the acl_check_data access control list to enable spam scanning. + +# spamd_address = 127.0.0.1 783 + +# Domain used to qualify unqualified recipient addresses +# If this option is not set, the qualify_domain value is used. +# qualify_recipient = + + +# Allow Exim to recognize addresses of the form "user@[10.11.12.13]", +# where the domain part is a "domain literal" (an IP address) instead +# of a named domain. The RFCs require this facility, but it is disabled +# in the default config since it is rarely used and frequently abused. +# Domain literal support also needs a special router, which is automatically +# enabled if you use the enable macro MAIN_ALLOW_DOMAIN_LITERALS. +# Additionally, you might want to make your local IP addresses (or @[]) +# local domains. +.ifdef MAIN_ALLOW_DOMAIN_LITERALS +allow_domain_literals +.endif + + +# Do a reverse DNS lookup on all incoming IP calls, in order to get the +# true host name. If you feel this is too expensive, the networks for +# which a lookup is done can be listed here. +.ifndef DC_minimaldns +.ifndef MAIN_HOST_LOOKUP +MAIN_HOST_LOOKUP = * +.endif +host_lookup = MAIN_HOST_LOOKUP +.endif + + +# In a minimaldns setup, update-exim4.conf guesses the hostname and +# dumps it here to avoid DNS lookups being done at Exim run time. +.ifdef MAIN_HARDCODE_PRIMARY_HOSTNAME +primary_hostname = MAIN_HARDCODE_PRIMARY_HOSTNAME +.endif + +# The settings below cause Exim to make RFC 1413 (ident) callbacks +# for all incoming SMTP calls. You can limit the hosts to which these +# calls are made, and/or change the timeout that is used. If you set +# the timeout to zero, all RFC 1413 calls are disabled. RFC 1413 calls +# are cheap and can provide useful information for tracing problem +# messages, but some hosts and firewalls have problems with them. +# This can result in a timeout instead of an immediate refused +# connection, leading to delays on starting up SMTP sessions. +# (The default was reduced from 30s to 5s for release 4.61. and to +# disabled for release 4.86) +# +#rfc1413_hosts = * +#rfc1413_query_timeout = 5s + + +# Enable an efficiency feature. We advertise the feature; clients +# may request to use it. For multi-recipient mails we then can +# reject or accept per-user after the message is received. +# +prdr_enable = true + +# When using an external relay tester (such as rt.njabl.org and/or the +# currently defunct relay-test.mail-abuse.org, the test may be aborted +# since exim complains about "too many nonmail commands". If you want +# the test to complete, add the host from where "your" relay tester +# connects from to the MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS macro. +# Please note that a non-empty setting may cause extra DNS lookups to +# happen, which is the reason why this option is commented out in the +# default settings. +# MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS = !rt.njabl.org +.ifdef MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS +smtp_accept_max_nonmail_hosts = MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS +.endif + +# By default, exim forces a Sender: header containing the local +# account name at the local host name in all locally submitted messages +# that don't have the local account name at the local host name in the +# From: header, deletes any Sender: header present in the submitted +# message and forces the envelope sender of all locally submitted +# messages to the local account name at the local host name. +# The following settings allow local users to specify their own envelope sender +# in a locally submitted message. Sender: headers existing in a locally +# submitted message are not removed, and no automatic Sender: headers +# are added. These settings are fine for most hosts. +# If you run exim on a classical multi-user systems where all users +# have local mailboxes that can be reached via SMTP from the Internet +# with the local FQDN as the domain part of the address, you might want +# to disable the following three lines for traceability reasons. +.ifndef MAIN_FORCE_SENDER +local_from_check = false +local_sender_retain = true +untrusted_set_sender = * +.endif + + +# By default, Exim expects all envelope addresses to be fully qualified, that +# is, they must contain both a local part and a domain. Configure exim +# to accept unqualified addresses from certain hosts. When this is done, +# unqualified addresses are qualified using the settings of qualify_domain +# and/or qualify_recipient (see above). +# sender_unqualified_hosts = +# recipient_unqualified_hosts = + + +# Configure Exim to support the "percent hack" for certain domains. +# The "percent hack" is the feature by which mail addressed to x%y@z +# (where z is one of the domains listed) is locally rerouted to x@y +# and sent on. If z is not one of the "percent hack" domains, x%y is +# treated as an ordinary local part. The percent hack is rarely needed +# nowadays but frequently abused. You should not enable it unless you +# are sure that you really need it. +# percent_hack_domains = + + +# Bounce handling +.ifndef MAIN_IGNORE_BOUNCE_ERRORS_AFTER +MAIN_IGNORE_BOUNCE_ERRORS_AFTER = 2d +.endif +ignore_bounce_errors_after = MAIN_IGNORE_BOUNCE_ERRORS_AFTER + +.ifndef MAIN_TIMEOUT_FROZEN_AFTER +MAIN_TIMEOUT_FROZEN_AFTER = 7d +.endif +timeout_frozen_after = MAIN_TIMEOUT_FROZEN_AFTER + +.ifndef MAIN_FREEZE_TELL +MAIN_FREEZE_TELL = postmaster +.endif +freeze_tell = MAIN_FREEZE_TELL + + +# Define spool directory +.ifndef SPOOLDIR +SPOOLDIR = /var/spool/exim4 +.endif +spool_directory = SPOOLDIR + + +# trusted users can set envelope-from to arbitrary values +.ifndef MAIN_TRUSTED_USERS +MAIN_TRUSTED_USERS = uucp +.endif +trusted_users = MAIN_TRUSTED_USERS +.ifdef MAIN_TRUSTED_GROUPS +trusted_groups = MAIN_TRUSTED_GROUPS +.endif + + +# users in admin group can do many other things +# admin_groups = + + +# SMTP Banner. The example includes the Debian version in the SMTP dialog +# MAIN_SMTP_BANNER = "${primary_hostname} ESMTP Exim ${version_number} (Debian package MAIN_PACKAGE_VERSION) ${tod_full}" +# smtp_banner = $smtp_active_hostname ESMTP Exim $version_number $tod_full + +.ifdef MAIN_KEEP_ENVIRONMENT +keep_environment = MAIN_KEEP_ENVIRONMENT +.else +# set option to empty value to avoid warning. +keep_environment = +.endif +.ifdef MAIN_ADD_ENVIRONMENT +add_environment = MAIN_ADD_ENVIRONMENT +.endif +##################################################### +### end main/02_exim4-config_options +##################################################### +##################################################### +### main/03_exim4-config_tlsoptions +##################################################### + +### main/03_exim4-config_tlsoptions +################################# + +# TLS/SSL configuration for exim as an SMTP server. +# See /usr/share/doc/exim4-base/README.Debian.gz for explanations. + +.ifdef MAIN_TLS_ENABLE +# Defines what hosts to 'advertise' STARTTLS functionality to. The +# default, *, will advertise to all hosts that connect with EHLO. +.ifndef MAIN_TLS_ADVERTISE_HOSTS +MAIN_TLS_ADVERTISE_HOSTS = * +.endif +tls_advertise_hosts = MAIN_TLS_ADVERTISE_HOSTS + + +# Full paths to Certificate and Private Key. The Private Key file +# must be kept 'secret' and should be owned by root.Debian-exim mode +# 640 (-rw-r-----). exim-gencert takes care of these prerequisites. +# Normally, exim4 looks for certificate and key in different files: +# MAIN_TLS_CERTIFICATE - path to certificate file, +# CONFDIR/exim.crt if unset +# MAIN_TLS_PRIVATEKEY - path to private key file +# CONFDIR/exim.key if unset +# You can also configure exim to look for certificate and key in the +# same file, set MAIN_TLS_CERTKEY to that file to enable. This takes +# precedence over all other settings regarding certificate and key file. +.ifdef MAIN_TLS_CERTKEY +tls_certificate = MAIN_TLS_CERTKEY +.else +.ifndef MAIN_TLS_CERTIFICATE +MAIN_TLS_CERTIFICATE = CONFDIR/exim.crt +.endif +tls_certificate = MAIN_TLS_CERTIFICATE + +.ifndef MAIN_TLS_PRIVATEKEY +MAIN_TLS_PRIVATEKEY = CONFDIR/exim.key +.endif +tls_privatekey = MAIN_TLS_PRIVATEKEY +.endif + +# Pointer to the CA Certificates against which client certificates are +# checked. This is controlled by the `tls_verify_hosts' and +# `tls_try_verify_hosts' lists below. +# If you want to check server certificates, you need to add an +# tls_verify_certificates statement to the smtp transport. +# /etc/ssl/certs/ca-certificates.crt is generated by +# the "ca-certificates" package's update-ca-certificates(8) command. +.ifndef MAIN_TLS_VERIFY_CERTIFICATES +MAIN_TLS_VERIFY_CERTIFICATES = ${if exists{/etc/ssl/certs/ca-certificates.crt}\ + {/etc/ssl/certs/ca-certificates.crt}\ + {/dev/null}} +.endif +tls_verify_certificates = MAIN_TLS_VERIFY_CERTIFICATES + + +# A list of hosts which are constrained by `tls_verify_certificates'. A host +# that matches `tls_verify_host' must present a certificate that is +# verifyable through `tls_verify_certificates' in order to be accepted as an +# SMTP client. If it does not, the connection is aborted. +.ifdef MAIN_TLS_VERIFY_HOSTS +tls_verify_hosts = MAIN_TLS_VERIFY_HOSTS +.endif + +# A weaker form of checking: if a client matches `tls_try_verify_hosts' (but +# not `tls_verify_hosts'), request a certificate and check it against +# `tls_verify_certificates' but do not abort the connection if there is no +# certificate or if the certificate presented does not match. (This +# condition can be tested for in ACLs through `verify = certificate') +# By default, this check is done for all hosts. It is known that some +# clients (including incredimail's version downloadable in February +# 2008) choke on this. To disable, set MAIN_TLS_TRY_VERIFY_HOSTS to an +# empty value. +.ifdef MAIN_TLS_TRY_VERIFY_HOSTS +tls_try_verify_hosts = MAIN_TLS_TRY_VERIFY_HOSTS +.endif + +.ifdef _HAVE_GNUTLS +tls_dhparam = historic +.endif + +.else +# Don't advertise TLS if MAIN_TLS_ENABLE is not set. +tls_advertise_hosts = +.endif +##################################################### +### end main/03_exim4-config_tlsoptions +##################################################### +##################################################### +### main/90_exim4-config_log_selector +##################################################### + +### main/90_exim4-config_log_selector +################################# + +# uncomment this for debugging +# MAIN_LOG_SELECTOR == MAIN_LOG_SELECTOR +all -subject -arguments + +.ifdef MAIN_LOG_SELECTOR +log_selector = MAIN_LOG_SELECTOR +.endif +##################################################### +### end main/90_exim4-config_log_selector +##################################################### +##################################################### +### acl/00_exim4-config_header +##################################################### + +###################################################################### +# ACL CONFIGURATION # +# Specifies access control lists for incoming SMTP mail # +###################################################################### +begin acl + + +##################################################### +### end acl/00_exim4-config_header +##################################################### +##################################################### +### acl/20_exim4-config_local_deny_exceptions +##################################################### + +### acl/20_exim4-config_local_deny_exceptions +################################# + +# This is used to determine whitelisted senders and hosts. +# It checks for CONFDIR/host_local_deny_exceptions and +# CONFDIR/sender_local_deny_exceptions. +# +# It is meant to be used from some other acl entry. +# +# See exim4-config_files(5) for details. +# +# If the files do not exist, the white list never matches, which is +# the desired behaviour. +# +# The old file names CONFDIR/local_host_whitelist and +# CONFDIR/local_sender_whitelist will continue to be honored for a +# transition period. Their use is deprecated. + +acl_local_deny_exceptions: + accept + hosts = ${if exists{CONFDIR/host_local_deny_exceptions}\ + {CONFDIR/host_local_deny_exceptions}\ + {}} + accept + senders = ${if exists{CONFDIR/sender_local_deny_exceptions}\ + {CONFDIR/sender_local_deny_exceptions}\ + {}} + accept + hosts = ${if exists{CONFDIR/local_host_whitelist}\ + {CONFDIR/local_host_whitelist}\ + {}} + accept + senders = ${if exists{CONFDIR/local_sender_whitelist}\ + {CONFDIR/local_sender_whitelist}\ + {}} + + # This hook allows you to hook in your own ACLs without having to + # modify this file. If you do it like we suggest, you'll end up with + # a small performance penalty since there is an additional file being + # accessed. This doesn't happen if you leave the macro unset. + .ifdef LOCAL_DENY_EXCEPTIONS_LOCAL_ACL_FILE + .include LOCAL_DENY_EXCEPTIONS_LOCAL_ACL_FILE + .endif + + # this is still supported for a transition period and is deprecated. + .ifdef WHITELIST_LOCAL_DENY_LOCAL_ACL_FILE + .include WHITELIST_LOCAL_DENY_LOCAL_ACL_FILE + .endif +##################################################### +### end acl/20_exim4-config_local_deny_exceptions +##################################################### +##################################################### +### acl/30_exim4-config_check_mail +##################################################### + +### acl/30_exim4-config_check_mail +################################# + +# This access control list is used for every MAIL command in an incoming +# SMTP message. The tests are run in order until the address is either +# accepted or denied. +# +acl_check_mail: + + accept +##################################################### +### end acl/30_exim4-config_check_mail +##################################################### +##################################################### +### acl/30_exim4-config_check_rcpt +##################################################### + +### acl/30_exim4-config_check_rcpt +################################# + +# This access control list is used for every RCPT command in an incoming +# SMTP message. The tests are run in order until the address is either +# accepted or denied. +# +acl_check_rcpt: + + # Accept if the source is local SMTP (i.e. not over TCP/IP). We do this by + # testing for an empty sending host field. + accept + hosts = : + control = dkim_disable_verify + + # Do not try to verify DKIM signatures of incoming mail if DC_minimaldns + # or DISABLE_DKIM_VERIFY are set. +.ifdef DC_minimaldns + warn + control = dkim_disable_verify +.else +.ifdef DISABLE_DKIM_VERIFY + warn + control = dkim_disable_verify +.endif +.endif + + # The following section of the ACL is concerned with local parts that contain + # certain non-alphanumeric characters. Dots in unusual places are + # handled by this ACL as well. + # + # Non-alphanumeric characters other than dots are rarely found in genuine + # local parts, but are often tried by people looking to circumvent + # relaying restrictions. Therefore, although they are valid in local + # parts, these rules disallow certain non-alphanumeric characters, as + # a precaution. + # + # Empty components (two dots in a row) are not valid in RFC 2822, but Exim + # allows them because they have been encountered. (Consider local parts + # constructed as "firstinitial.secondinitial.familyname" when applied to + # a name without a second initial.) However, a local part starting + # with a dot or containing /../ can cause trouble if it is used as part of a + # file name (e.g. for a mailing list). This is also true for local parts that + # contain slashes. A pipe symbol can also be troublesome if the local part is + # incorporated unthinkingly into a shell command line. + # + # These ACL components will block recipient addresses that are valid + # from an RFC2822 point of view. We chose to have them blocked by + # default for security reasons. + # + # If you feel that your site should have less strict recipient + # checking, please feel free to change the default values of the macros + # defined in main/01_exim4-config_listmacrosdefs or override them from a + # local configuration file. + # + # Two different rules are used. The first one has a quite strict + # default, and is applied to messages that are addressed to one of the + # local domains handled by this host. + + # The default value of CHECK_RCPT_LOCAL_LOCALPARTS is defined in + # main/01_exim4-config_listmacrosdefs: + # CHECK_RCPT_LOCAL_LOCALPARTS = ^[.] : ^.*[@%!/|`#&?] + # This blocks local parts that begin with a dot or contain a quite + # broad range of non-alphanumeric characters. + .ifdef CHECK_RCPT_LOCAL_LOCALPARTS + deny + domains = +local_domains + local_parts = CHECK_RCPT_LOCAL_LOCALPARTS + message = restricted characters in address + .endif + + + # The second rule applies to all other domains, and its default is + # considerably less strict. + + # The default value of CHECK_RCPT_REMOTE_LOCALPARTS is defined in + # main/01_exim4-config_listmacrosdefs: + # CHECK_RCPT_REMOTE_LOCALPARTS = ^[./|] : ^.*[@%!`#&?] : ^.*/\\.\\./ + + # It allows local users to send outgoing messages to sites + # that use slashes and vertical bars in their local parts. It blocks + # local parts that begin with a dot, slash, or vertical bar, but allows + # these characters within the local part. However, the sequence /../ is + # barred. The use of some other non-alphanumeric characters is blocked. + # Single quotes might probably be dangerous as well, but they're + # allowed by the default regexps to avoid rejecting mails to Ireland. + # The motivation here is to prevent local users (or local users' malware) + # from mounting certain kinds of attack on remote sites. + .ifdef CHECK_RCPT_REMOTE_LOCALPARTS + deny + domains = !+local_domains + local_parts = CHECK_RCPT_REMOTE_LOCALPARTS + message = restricted characters in address + .endif + + + # Accept mail to postmaster in any local domain, regardless of the source, + # and without verifying the sender. + # + accept + .ifndef CHECK_RCPT_POSTMASTER + local_parts = postmaster + .else + local_parts = CHECK_RCPT_POSTMASTER + .endif + domains = +local_domains : +relay_to_domains + + + # Deny unless the sender address can be verified. + # + # This is disabled by default so that DNSless systems don't break. If + # your system can do DNS lookups without delay or cost, you might want + # to enable this feature. + # + # This feature does not work in smarthost and satellite setups as + # with these setups all domains pass verification. See spec.txt section + # "Access control lists" subsection "Address verification" with the added + # information that a smarthost/satellite setup routes all non-local e-mail + # to the smarthost. + .ifdef CHECK_RCPT_VERIFY_SENDER + deny + message = Sender verification failed + !acl = acl_local_deny_exceptions + !verify = sender + .endif + + # Verify senders listed in local_sender_callout with a callout. + # + # In smarthost and satellite setups, this causes the callout to be + # done to the smarthost. Verification will thus only be reliable if the + # smarthost does reject illegal addresses in the SMTP dialog. + deny + !acl = acl_local_deny_exceptions + senders = ${if exists{CONFDIR/local_sender_callout}\ + {CONFDIR/local_sender_callout}\ + {}} + !verify = sender/callout + + + # Accept if the message comes from one of the hosts for which we are an + # outgoing relay. It is assumed that such hosts are most likely to be MUAs, + # so we set control=submission to make Exim treat the message as a + # submission. It will fix up various errors in the message, for example, the + # lack of a Date: header line. If you are actually relaying out out from + # MTAs, you may want to disable this. If you are handling both relaying from + # MTAs and submissions from MUAs you should probably split them into two + # lists, and handle them differently. + + # Recipient verification is omitted here, because in many cases the clients + # are dumb MUAs that don't cope well with SMTP error responses. If you are + # actually relaying out from MTAs, you should probably add recipient + # verification here. + + # Note that, by putting this test before any DNS black list checks, you will + # always accept from these hosts, even if they end up on a black list. The + # assumption is that they are your friends, and if they get onto black + # list, it is a mistake. + accept + hosts = +relay_from_hosts + control = submission/sender_retain + control = dkim_disable_verify + + + # Accept if the message arrived over an authenticated connection, from + # any host. Again, these messages are usually from MUAs, so recipient + # verification is omitted, and submission mode is set. And again, we do this + # check before any black list tests. + accept + authenticated = * + control = submission/sender_retain + control = dkim_disable_verify + + # Insist that a HELO/EHLO was accepted. + + require message = nice hosts say HELO first + condition = ${if def:sender_helo_name} + + # Insist that any other recipient address that we accept is either in one of + # our local domains, or is in a domain for which we explicitly allow + # relaying. Any other domain is rejected as being unacceptable for relaying. + require + message = relay not permitted + domains = +local_domains : +relay_to_domains + + + # We also require all accepted addresses to be verifiable. This check will + # do local part verification for local domains, but only check the domain + # for remote domains. + require + verify = recipient + + + # Verify recipients listed in local_rcpt_callout with a callout. + # This is especially handy for forwarding MX hosts (secondary MX or + # mail hubs) of domains that receive a lot of spam to non-existent + # addresses. The only way to check local parts for remote relay + # domains is to use a callout (add /callout), but please read the + # documentation about callouts before doing this. + deny + !acl = acl_local_deny_exceptions + recipients = ${if exists{CONFDIR/local_rcpt_callout}\ + {CONFDIR/local_rcpt_callout}\ + {}} + !verify = recipient/callout + + + # CONFDIR/local_sender_blacklist holds a list of envelope senders that + # should have their access denied to the local host. Incoming messages + # with one of these senders are rejected at RCPT time. + # + # The explicit white lists are honored as well as negative items in + # the black list. See exim4-config_files(5) for details. + deny + message = sender envelope address $sender_address is locally blacklisted here. If you think this is wrong, get in touch with postmaster + !acl = acl_local_deny_exceptions + senders = ${if exists{CONFDIR/local_sender_blacklist}\ + {CONFDIR/local_sender_blacklist}\ + {}} + + + # deny bad sites (IP address) + # CONFDIR/local_host_blacklist holds a list of host names, IP addresses + # and networks (CIDR notation) that should have their access denied to + # The local host. Messages coming in from a listed host will have all + # RCPT statements rejected. + # + # The explicit white lists are honored as well as negative items in + # the black list. See exim4-config_files(5) for details. + deny + message = sender IP address $sender_host_address is locally blacklisted here. If you think this is wrong, get in touch with postmaster + !acl = acl_local_deny_exceptions + hosts = ${if exists{CONFDIR/local_host_blacklist}\ + {CONFDIR/local_host_blacklist}\ + {}} + + + # Warn if the sender host does not have valid reverse DNS. + # + # If your system can do DNS lookups without delay or cost, you might want + # to enable this. + # If sender_host_address is defined, it's a remote call. If + # sender_host_name is not defined, then reverse lookup failed. Use + # this instead of !verify = reverse_host_lookup to catch deferrals + # as well as outright failures. + .ifdef CHECK_RCPT_REVERSE_DNS + warn + condition = ${if and{{def:sender_host_address}{!def:sender_host_name}}\ + {yes}{no}} + add_header = X-Host-Lookup-Failed: Reverse DNS lookup failed for $sender_host_address (${if eq{$host_lookup_failed}{1}{failed}{deferred}}) + .endif + + + # Use spfquery to perform a pair of SPF checks (for details, see + # http://www.openspf.org/) + # + # This is quite costly in terms of DNS lookups (~6 lookups per mail). Do not + # enable if that's an issue. Also note that if you enable this, you must + # install "spf-tools-perl" which provides the spfquery command. + # Missing spf-tools-perl will trigger the "Unexpected error in + # SPF check" warning. + .ifdef CHECK_RCPT_SPF + deny + message = [SPF] $sender_host_address is not allowed to send mail from \ + ${if def:sender_address_domain {$sender_address_domain}{$sender_helo_name}}. \ + Please see \ + http://www.openspf.org/Why?scope=${if def:sender_address_domain \ + {mfrom}{helo}};identity=${if def:sender_address_domain \ + {$sender_address}{$sender_helo_name}};ip=$sender_host_address + log_message = SPF check failed. + !acl = acl_local_deny_exceptions + condition = ${run{/usr/bin/spfquery.mail-spf-perl --ip \ + ${quote:$sender_host_address} --identity \ + ${if def:sender_address_domain \ + {--scope mfrom --identity ${quote:$sender_address}}\ + {--scope helo --identity ${quote:$sender_helo_name}}}}\ + {no}{${if eq {$runrc}{1}{yes}{no}}}} + + defer + message = Temporary DNS error while checking SPF record. Try again later. + !acl = acl_local_deny_exceptions + condition = ${if eq {$runrc}{5}{yes}{no}} + + warn + condition = ${if <={$runrc}{6}{yes}{no}} + add_header = Received-SPF: ${if eq {$runrc}{0}{pass}\ + {${if eq {$runrc}{2}{softfail}\ + {${if eq {$runrc}{3}{neutral}\ + {${if eq {$runrc}{4}{permerror}\ + {${if eq {$runrc}{6}{none}{error}}}}}}}}}\ + } client-ip=$sender_host_address; \ + ${if def:sender_address_domain \ + {envelope-from=${sender_address}; }{}}\ + helo=$sender_helo_name + + warn + log_message = Unexpected error in SPF check. + condition = ${if >{$runrc}{6}{yes}{no}} + .endif + + + # Check against classic DNS "black" lists (DNSBLs) which list + # sender IP addresses + .ifdef CHECK_RCPT_IP_DNSBLS + warn + dnslists = CHECK_RCPT_IP_DNSBLS + add_header = X-Warning: $sender_host_address is listed at $dnslist_domain ($dnslist_value: $dnslist_text) + log_message = $sender_host_address is listed at $dnslist_domain ($dnslist_value: $dnslist_text) + .endif + + + # Check against DNSBLs which list sender domains, with an option to locally + # whitelist certain domains that might be blacklisted. + # + # Note: If you define CHECK_RCPT_DOMAIN_DNSBLS, you must append + # "/$sender_address_domain" after each domain. For example: + # CHECK_RCPT_DOMAIN_DNSBLS = rhsbl.foo.org/$sender_address_domain \ + # : rhsbl.bar.org/$sender_address_domain + .ifdef CHECK_RCPT_DOMAIN_DNSBLS + warn + !senders = ${if exists{CONFDIR/local_domain_dnsbl_whitelist}\ + {CONFDIR/local_domain_dnsbl_whitelist}\ + {}} + dnslists = CHECK_RCPT_DOMAIN_DNSBLS + add_header = X-Warning: $sender_address_domain is listed at $dnslist_domain ($dnslist_value: $dnslist_text) + log_message = $sender_address_domain is listed at $dnslist_domain ($dnslist_value: $dnslist_text) + .endif + + + # This hook allows you to hook in your own ACLs without having to + # modify this file. If you do it like we suggest, you'll end up with + # a small performance penalty since there is an additional file being + # accessed. This doesn't happen if you leave the macro unset. + .ifdef CHECK_RCPT_LOCAL_ACL_FILE + .include CHECK_RCPT_LOCAL_ACL_FILE + .endif + + + ############################################################################# + # This check is commented out because it is recognized that not every + # sysadmin will want to do it. If you enable it, the check performs + # Client SMTP Authorization (csa) checks on the sending host. These checks + # do DNS lookups for SRV records. The CSA proposal is currently (May 2005) + # an Internet draft. You can, of course, add additional conditions to this + # ACL statement to restrict the CSA checks to certain hosts only. + # + # require verify = csa + ############################################################################# + + + # Accept if the address is in a domain for which we are an incoming relay, + # but again, only if the recipient can be verified. + + accept + domains = +relay_to_domains + endpass + verify = recipient + + + # At this point, the address has passed all the checks that have been + # configured, so we accept it unconditionally. + + accept +##################################################### +### end acl/30_exim4-config_check_rcpt +##################################################### +##################################################### +### acl/40_exim4-config_check_data +##################################################### + +### acl/40_exim4-config_check_data +################################# + +# This ACL is used after the contents of a message have been received. This +# is the ACL in which you can test a message's headers or body, and in +# particular, this is where you can invoke external virus or spam scanners. + +acl_check_data: + + # Deny if the message contains an overlong line. Per the standards + # we should never receive one such via SMTP. + # + .ifndef IGNORE_SMTP_LINE_LENGTH_LIMIT + deny message = maximum allowed line length is 998 octets, \ + got $max_received_linelength + condition = ${if > {$max_received_linelength}{998}} + .endif + + # Deny unless the address list headers are syntactically correct. + # + # If you enable this, you might reject legitimate mail. + .ifdef CHECK_DATA_VERIFY_HEADER_SYNTAX + deny + message = Message headers fail syntax check + !acl = acl_local_deny_exceptions + !verify = header_syntax + .endif + + + # require that there is a verifiable sender address in at least + # one of the "Sender:", "Reply-To:", or "From:" header lines. + .ifdef CHECK_DATA_VERIFY_HEADER_SENDER + deny + message = No verifiable sender address in message headers + !acl = acl_local_deny_exceptions + !verify = header_sender + .endif + + + # Deny if the message contains malware. Before enabling this check, you + # must install a virus scanner and set the av_scanner option in the + # main configuration. + # + # exim4-daemon-heavy must be used for this section to work. + # + # deny + # malware = * + # message = This message was detected as possible malware ($malware_name). + + + # Add headers to a message if it is judged to be spam. Before enabling this, + # you must install SpamAssassin. You also need to set the spamd_address + # option in the main configuration. + # + # exim4-daemon-heavy must be used for this section to work. + # + # Please note that this is only suiteable as an example. There are + # multiple issues with this configuration method. For example, if you go + # this way, you'll give your spamassassin daemon write access to the + # entire exim spool which might be a security issue in case of a + # spamassassin exploit. + # + # See the exim docs and the exim wiki for more suitable examples. + # + # warn + # spam = Debian-exim:true + # add_header = X-Spam_score: $spam_score\n\ + # X-Spam_score_int: $spam_score_int\n\ + # X-Spam_bar: $spam_bar\n\ + # X-Spam_report: $spam_report + + + # This hook allows you to hook in your own ACLs without having to + # modify this file. If you do it like we suggest, you'll end up with + # a small performance penalty since there is an additional file being + # accessed. This doesn't happen if you leave the macro unset. + .ifdef CHECK_DATA_LOCAL_ACL_FILE + .include CHECK_DATA_LOCAL_ACL_FILE + .endif + + + # accept otherwise + accept +##################################################### +### end acl/40_exim4-config_check_data +##################################################### +##################################################### +### router/00_exim4-config_header +##################################################### + +###################################################################### +# ROUTERS CONFIGURATION # +# Specifies how addresses are handled # +###################################################################### +# THE ORDER IN WHICH THE ROUTERS ARE DEFINED IS IMPORTANT! # +# An address is passed to each router in turn until it is accepted. # +###################################################################### + +begin routers + +##################################################### +### end router/00_exim4-config_header +##################################################### +##################################################### +### router/100_exim4-config_domain_literal +##################################################### + +### router/100_exim4-config_domain_literal +################################# + +# This router handles e-mail addresses in "domain literal" form like +# . The RFCs require this facility, but it is disabled +# in the default config since it is rarely used and frequently abused. +# Domain literal support also needs to be enabled in the main config, +# which is automatically done if you use the enable macro +# MAIN_ALLOW_DOMAIN_LITERALS. + +.ifdef MAIN_ALLOW_DOMAIN_LITERALS +domain_literal: + debug_print = "R: domain_literal for $local_part@$domain" + driver = ipliteral + domains = ! +local_domains + transport = remote_smtp +.endif +##################################################### +### end router/100_exim4-config_domain_literal +##################################################### +##################################################### +### router/150_exim4-config_hubbed_hosts +##################################################### + +# router/150_exim4-config_hubbed_hosts +################################# + +# route specific domains manually. +# +# see exim4-config_files(5) and spec.txt chapter 20.3 through 20.7 for +# more detailed documentation. + +hubbed_hosts: + debug_print = "R: hubbed_hosts for $domain" + driver = manualroute + domains = "${if exists{CONFDIR/hubbed_hosts}\ + {partial-lsearch;CONFDIR/hubbed_hosts}\ + fail}" + same_domain_copy_routing = yes + route_data = ${lookup{$domain}partial-lsearch{CONFDIR/hubbed_hosts}} + transport = remote_smtp +##################################################### +### end router/150_exim4-config_hubbed_hosts +##################################################### +##################################################### +### router/200_exim4-config_primary +##################################################### + +### router/200_exim4-config_primary +################################# +# This file holds the primary router, responsible for nonlocal mails + +.ifdef DCconfig_internet +# configtype=internet +# +# deliver mail to the recipient if recipient domain is a domain we +# relay for. We do not ignore any target hosts here since delivering to +# a site local or even a link local address might be wanted here, and if +# such an address has found its way into the MX record of such a domain, +# the local admin is probably in a place where that broken MX record +# could be fixed. + +dnslookup_relay_to_domains: + debug_print = "R: dnslookup_relay_to_domains for $local_part@$domain" + driver = dnslookup + domains = ! +local_domains : +relay_to_domains + transport = remote_smtp + same_domain_copy_routing = yes + no_more + +# deliver mail directly to the recipient. This router is only reached +# for domains that we do not relay for. Since we most probably can't +# have broken MX records pointing to site local or link local IP +# addresses fixed, we ignore target hosts pointing to these addresses. + +dnslookup: + debug_print = "R: dnslookup for $local_part@$domain" + driver = dnslookup + domains = ! +local_domains + transport = remote_smtp + same_domain_copy_routing = yes + # ignore private rfc1918 and APIPA addresses + ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8 : 192.168.0.0/16 :\ + 172.16.0.0/12 : 10.0.0.0/8 : 169.254.0.0/16 :\ + 255.255.255.255 + no_more + +.endif + + +.ifdef DCconfig_local +# configtype=local +# +# Stand-alone system, so generate an error for mail to a non-local domain +nonlocal: + debug_print = "R: nonlocal for $local_part@$domain" + driver = redirect + domains = ! +local_domains + allow_fail + data = :fail: Mailing to remote domains not supported + no_more + +.endif + + +.ifdef DCconfig_smarthost DCconfig_satellite +# configtype=smarthost or configtype=satellite +# +# Send all non-local mail to a single other machine (smarthost). +# +# This means _ALL_ non-local mail goes to the smarthost. This will most +# probably not do what you want for domains that are listed in +# relay_domains. The most typical use for relay_domains is to control +# relaying for incoming e-mail on secondary MX hosts. In that case, +# it doesn't make sense to send the mail to the smarthost since the +# smarthost will probably send the message right back here, causing a +# loop. +# +# If you want to use a smarthost while being secondary MX for some +# domains, you'll need to copy the dnslookup_relay_to_domains router +# here so that mail to relay_domains is handled separately. + +smarthost: + debug_print = "R: smarthost for $local_part@$domain" + driver = manualroute + domains = ! +local_domains + transport = remote_smtp_smarthost + route_list = * DCsmarthost byname + host_find_failed = ignore + same_domain_copy_routing = yes + no_more + +.endif + + +# The "no_more" above means that all later routers are for +# domains in the local_domains list, i.e. just like Exim 3 directors. +##################################################### +### end router/200_exim4-config_primary +##################################################### +##################################################### +### router/300_exim4-config_real_local +##################################################### + +### router/300_exim4-config_real_local +################################# + +# This router allows reaching a local user while avoiding local +# processing. This can be used to inform a user of a broken .forward +# file, for example. The userforward router does this. + +COND_LOCAL_SUBMITTER = "\ + ${if match_ip{$sender_host_address}{:@[]}\ + {1}{0}\ + }" + +real_local: + debug_print = "R: real_local for $local_part@$domain" + driver = accept + domains = +local_domains + condition = COND_LOCAL_SUBMITTER + local_part_prefix = real- + check_local_user + transport = LOCAL_DELIVERY + +##################################################### +### end router/300_exim4-config_real_local +##################################################### +##################################################### +### router/400_exim4-config_system_aliases +##################################################### + +### router/400_exim4-config_system_aliases +################################# + +# This router handles aliasing using a traditional /etc/aliases file. +# +##### NB You must ensure that /etc/aliases exists. It used to be the case +##### NB that every Unix had that file, because it was the Sendmail default. +##### NB These days, there are systems that don't have it. Your aliases +##### NB file should at least contain an alias for "postmaster". +# +# This router handles the local part in a case-insensitive way which +# satisfies the RFCs requirement that postmaster be reachable regardless +# of case. If you decide to handle /etc/aliases in a caseful way, you +# need to make arrangements for a caseless postmaster. +# +# Delivery to arbitrary directories, files, and piping to programs in +# /etc/aliases is disabled per default. +# If that is a problem for you, see +# /usr/share/doc/exim4-base/README.Debian.gz +# for explanation and some workarounds. + +system_aliases: + debug_print = "R: system_aliases for $local_part@$domain" + driver = redirect + domains = +local_domains + allow_fail + allow_defer + data = ${lookup{$local_part}lsearch{/etc/aliases}} + .ifdef SYSTEM_ALIASES_USER + user = SYSTEM_ALIASES_USER + .endif + .ifdef SYSTEM_ALIASES_GROUP + group = SYSTEM_ALIASES_GROUP + .endif + .ifdef SYSTEM_ALIASES_FILE_TRANSPORT + file_transport = SYSTEM_ALIASES_FILE_TRANSPORT + .endif + .ifdef SYSTEM_ALIASES_PIPE_TRANSPORT + pipe_transport = SYSTEM_ALIASES_PIPE_TRANSPORT + .endif + .ifdef SYSTEM_ALIASES_DIRECTORY_TRANSPORT + directory_transport = SYSTEM_ALIASES_DIRECTORY_TRANSPORT + .endif +##################################################### +### end router/400_exim4-config_system_aliases +##################################################### +##################################################### +### router/500_exim4-config_hubuser +##################################################### + +### router/500_exim4-config_hubuser +################################# + +.ifdef DCconfig_satellite +# This router is only used for configtype=satellite. +# It takes care to route all mail targeted to +# to the host where we read our mail +# +hub_user: + debug_print = "R: hub_user for $local_part@$domain" + driver = redirect + domains = +local_domains + data = ${local_part}@DCreadhost + check_local_user + +# Grab the redirected mail and deliver it. +# This is a duplicate of the smarthost router, needed because +# DCreadhost might end up as part of +local_domains +hub_user_smarthost: + debug_print = "R: hub_user_smarthost for $local_part@$domain" + driver = manualroute + domains = DCreadhost + transport = remote_smtp_smarthost + route_list = * DCsmarthost byname + host_find_failed = ignore + same_domain_copy_routing = yes + check_local_user +.endif + + +##################################################### +### end router/500_exim4-config_hubuser +##################################################### +##################################################### +### router/600_exim4-config_userforward +##################################################### + +### router/600_exim4-config_userforward +################################# + +# This router handles forwarding using traditional .forward files in users' +# home directories. It also allows mail filtering with a forward file +# starting with the string "# Exim filter" or "# Sieve filter". +# +# The no_verify setting means that this router is skipped when Exim is +# verifying addresses. Similarly, no_expn means that this router is skipped if +# Exim is processing an EXPN command. +# +# The check_ancestor option means that if the forward file generates an +# address that is an ancestor of the current one, the current one gets +# passed on instead. This covers the case where A is aliased to B and B +# has a .forward file pointing to A. +# +# The four transports specified at the end are those that are used when +# forwarding generates a direct delivery to a directory, or a file, or to a +# pipe, or sets up an auto-reply, respectively. +# +userforward: + debug_print = "R: userforward for $local_part@$domain" + driver = redirect + domains = +local_domains + check_local_user + file = $home/.forward + require_files = $local_part:$home/.forward + no_verify + no_expn + check_ancestor + allow_filter + forbid_smtp_code = true + directory_transport = address_directory + file_transport = address_file + pipe_transport = address_pipe + reply_transport = address_reply + skip_syntax_errors + syntax_errors_to = real-$local_part@$domain + syntax_errors_text = \ + This is an automatically generated message. An error has\n\ + been found in your .forward file. Details of the error are\n\ + reported below. While this error persists, you will receive\n\ + a copy of this message for every message that is addressed\n\ + to you. If your .forward file is a filter file, or if it is\n\ + a non-filter file containing no valid forwarding addresses,\n\ + a copy of each incoming message will be put in your normal\n\ + mailbox. If a non-filter file contains at least one valid\n\ + forwarding address, forwarding to the valid addresses will\n\ + happen, and those will be the only deliveries that occur. + +##################################################### +### end router/600_exim4-config_userforward +##################################################### +##################################################### +### router/700_exim4-config_procmail +##################################################### + +procmail: + debug_print = "R: procmail for $local_part@$domain" + driver = accept + domains = +local_domains + check_local_user + transport = procmail_pipe + # emulate OR with "if exists"-expansion + require_files = ${local_part}:\ + ${if exists{/etc/procmailrc}\ + {/etc/procmailrc}{${home}/.procmailrc}}:\ + +/usr/bin/procmail + no_verify + no_expn + +##################################################### +### end router/700_exim4-config_procmail +##################################################### +##################################################### +### router/800_exim4-config_maildrop +##################################################### + +### router/800_exim4-config_maildrop +################################# + +maildrop: + debug_print = "R: maildrop for $local_part@$domain" + driver = accept + domains = +local_domains + check_local_user + transport = maildrop_pipe + require_files = ${local_part}:${home}/.mailfilter:+/usr/bin/maildrop + no_verify + no_expn + +##################################################### +### end router/800_exim4-config_maildrop +##################################################### +##################################################### +### router/850_exim4-config_lowuid +##################################################### + +### router/850_exim4-config_lowuid +################################# + +.ifndef FIRST_USER_ACCOUNT_UID +FIRST_USER_ACCOUNT_UID = 0 +.endif + +.ifndef DEFAULT_SYSTEM_ACCOUNT_ALIAS +DEFAULT_SYSTEM_ACCOUNT_ALIAS = :fail: no mail to system accounts +.endif + +COND_SYSTEM_USER_AND_REMOTE_SUBMITTER = "\ + ${if and{{! match_ip{$sender_host_address}{:@[]}}\ + {<{$local_user_uid}{FIRST_USER_ACCOUNT_UID}}}\ + {1}{0}\ + }" + +lowuid_aliases: + debug_print = "R: lowuid_aliases for $local_part@$domain (UID $local_user_uid)" + check_local_user + driver = redirect + allow_fail + domains = +local_domains + condition = COND_SYSTEM_USER_AND_REMOTE_SUBMITTER + data = ${if exists{CONFDIR/lowuid-aliases}\ + {${lookup{$local_part}lsearch{CONFDIR/lowuid-aliases}\ + {$value}{DEFAULT_SYSTEM_ACCOUNT_ALIAS}}}\ + {DEFAULT_SYSTEM_ACCOUNT_ALIAS}} +##################################################### +### end router/850_exim4-config_lowuid +##################################################### +##################################################### +### router/900_exim4-config_local_user +##################################################### + +### router/900_exim4-config_local_user +################################# + +# This router matches local user mailboxes. If the router fails, the error +# message is "Unknown user". + +local_user: + debug_print = "R: local_user for $local_part@$domain" + driver = accept + domains = +local_domains + check_local_user + local_parts = ! root + transport = LOCAL_DELIVERY + cannot_route_message = Unknown user +##################################################### +### end router/900_exim4-config_local_user +##################################################### +##################################################### +### router/mmm_mail4root +##################################################### + +### router/mmm_mail4root +################################# +# deliver mail addressed to root to /var/mail/mail as user mail:mail +# if it was not redirected in /etc/aliases or by other means +# Exim cannot deliver as root since 4.24 (FIXED_NEVER_USERS) + +mail4root: + debug_print = "R: mail4root for $local_part@$domain" + driver = redirect + domains = +local_domains + data = /var/mail/mail + file_transport = address_file + local_parts = root + user = mail + group = mail + +##################################################### +### end router/mmm_mail4root +##################################################### +##################################################### +### transport/00_exim4-config_header +##################################################### + +###################################################################### +# TRANSPORTS CONFIGURATION # +###################################################################### +# ORDER DOES NOT MATTER # +# Only one appropriate transport is called for each delivery. # +###################################################################### + +# A transport is used only when referenced from a router that successfully +# handles an address. + +begin transports + +##################################################### +### end transport/00_exim4-config_header +##################################################### +##################################################### +### transport/10_exim4-config_transport-macros +##################################################### + +### transport/10_exim4-config_transport-macros +################################# + +.ifdef HIDE_MAILNAME +REMOTE_SMTP_HEADERS_REWRITE=*@+local_domains $1@DCreadhost frs : *@ETC_MAILNAME $1@DCreadhost frs +REMOTE_SMTP_RETURN_PATH=${if match_domain{$sender_address_domain}{+local_domains}{${sender_address_local_part}@DCreadhost}{${if match_domain{$sender_address_domain}{ETC_MAILNAME}{${sender_address_local_part}@DCreadhost}fail}}} +.endif + +.ifdef REMOTE_SMTP_HELO_FROM_DNS +.ifdef REMOTE_SMTP_HELO_DATA +REMOTE_SMTP_HELO_DATA==${lookup dnsdb {ptr=$sending_ip_address}{$value}{$primary_hostname}} +.else +REMOTE_SMTP_HELO_DATA=${lookup dnsdb {ptr=$sending_ip_address}{$value}{$primary_hostname}} +.endif +.endif +##################################################### +### end transport/10_exim4-config_transport-macros +##################################################### +##################################################### +### transport/30_exim4-config_address_file +##################################################### + +# This transport is used for handling deliveries directly to files that are +# generated by aliasing or forwarding. +# +address_file: + debug_print = "T: address_file for $local_part@$domain" + driver = appendfile + delivery_date_add + envelope_to_add + return_path_add + +##################################################### +### end transport/30_exim4-config_address_file +##################################################### +##################################################### +### transport/30_exim4-config_address_pipe +##################################################### + +# This transport is used for handling pipe deliveries generated by +# .forward files. If the commands fails and produces any output on standard +# output or standard error streams, the output is returned to the sender +# of the message as a delivery error. +address_pipe: + debug_print = "T: address_pipe for $local_part@$domain" + driver = pipe + return_fail_output + +##################################################### +### end transport/30_exim4-config_address_pipe +##################################################### +##################################################### +### transport/30_exim4-config_address_reply +##################################################### + +# This transport is used for handling autoreplies generated by the filtering +# option of the userforward router. +# +address_reply: + debug_print = "T: autoreply for $local_part@$domain" + driver = autoreply + +##################################################### +### end transport/30_exim4-config_address_reply +##################################################### +##################################################### +### transport/30_exim4-config_mail_spool +##################################################### + +### transport/30_exim4-config_mail_spool + +# This transport is used for local delivery to user mailboxes in traditional +# BSD mailbox format. +# +mail_spool: + debug_print = "T: appendfile for $local_part@$domain" + driver = appendfile + file = /var/mail/$local_part + delivery_date_add + envelope_to_add + return_path_add + group = mail + mode = 0660 + mode_fail_narrower = false + +##################################################### +### end transport/30_exim4-config_mail_spool +##################################################### +##################################################### +### transport/30_exim4-config_maildir_home +##################################################### + +### transport/30_exim4-config_maildir_home +################################# + +# Use this instead of mail_spool if you want to to deliver to Maildir in +# home-directory - change the definition of LOCAL_DELIVERY +# +maildir_home: + debug_print = "T: maildir_home for $local_part@$domain" + driver = appendfile + .ifdef MAILDIR_HOME_MAILDIR_LOCATION + directory = MAILDIR_HOME_MAILDIR_LOCATION + .else + directory = $home/Maildir + .endif + .ifdef MAILDIR_HOME_CREATE_DIRECTORY + create_directory + .endif + .ifdef MAILDIR_HOME_CREATE_FILE + create_file = MAILDIR_HOME_CREATE_FILE + .endif + delivery_date_add + envelope_to_add + return_path_add + maildir_format + .ifdef MAILDIR_HOME_DIRECTORY_MODE + directory_mode = MAILDIR_HOME_DIRECTORY_MODE + .else + directory_mode = 0700 + .endif + .ifdef MAILDIR_HOME_MODE + mode = MAILDIR_HOME_MODE + .else + mode = 0600 + .endif + mode_fail_narrower = false + # This transport always chdirs to $home before trying to deliver. If + # $home is not accessible, this chdir fails and prevents delivery. + # If you are in a setup where home directories might not be + # accessible, uncomment the current_directory line below. + # current_directory = / +##################################################### +### end transport/30_exim4-config_maildir_home +##################################################### +##################################################### +### transport/30_exim4-config_maildrop_pipe +##################################################### + +maildrop_pipe: + debug_print = "T: maildrop_pipe for $local_part@$domain" + driver = pipe + path = "/bin:/usr/bin:/usr/local/bin" + command = "/usr/bin/maildrop" + message_prefix = + message_suffix = + return_path_add + delivery_date_add + envelope_to_add + +##################################################### +### end transport/30_exim4-config_maildrop_pipe +##################################################### +##################################################### +### transport/30_exim4-config_procmail_pipe +##################################################### + +procmail_pipe: + debug_print = "T: procmail_pipe for $local_part@$domain" + driver = pipe + path = "/bin:/usr/bin:/usr/local/bin" + command = "/usr/bin/procmail" + return_path_add + delivery_date_add + envelope_to_add + +##################################################### +### end transport/30_exim4-config_procmail_pipe +##################################################### +##################################################### +### transport/30_exim4-config_remote_smtp +##################################################### + +### transport/30_exim4-config_remote_smtp +################################# +# This transport is used for delivering messages over SMTP connections. +# Refuse to send any message with over-long lines, which could have +# been received other than via SMTP. The use of message_size_limit to +# enforce this is a red herring. + +remote_smtp: + debug_print = "T: remote_smtp for $local_part@$domain" + driver = smtp +.ifndef IGNORE_SMTP_LINE_LENGTH_LIMIT + message_size_limit = ${if > {$max_received_linelength}{998} {1}{0}} +.endif +.ifdef REMOTE_SMTP_HOSTS_AVOID_TLS + hosts_avoid_tls = REMOTE_SMTP_HOSTS_AVOID_TLS +.endif +.ifdef REMOTE_SMTP_HEADERS_REWRITE + headers_rewrite = REMOTE_SMTP_HEADERS_REWRITE +.endif +.ifdef REMOTE_SMTP_RETURN_PATH + return_path = REMOTE_SMTP_RETURN_PATH +.endif +.ifdef REMOTE_SMTP_HELO_DATA + helo_data=REMOTE_SMTP_HELO_DATA +.endif +.ifdef DKIM_DOMAIN +dkim_domain = DKIM_DOMAIN +.endif +.ifdef DKIM_SELECTOR +dkim_selector = DKIM_SELECTOR +.endif +.ifdef DKIM_PRIVATE_KEY +dkim_private_key = DKIM_PRIVATE_KEY +.endif +.ifdef DKIM_CANON +dkim_canon = DKIM_CANON +.endif +.ifdef DKIM_STRICT +dkim_strict = DKIM_STRICT +.endif +.ifdef DKIM_SIGN_HEADERS +dkim_sign_headers = DKIM_SIGN_HEADERS +.endif +.ifdef TLS_DH_MIN_BITS +tls_dh_min_bits = TLS_DH_MIN_BITS +.endif +.ifdef REMOTE_SMTP_TLS_CERTIFICATE +tls_certificate = REMOTE_SMTP_TLS_CERTIFICATE +.endif +.ifdef REMOTE_SMTP_PRIVATEKEY +tls_privatekey = REMOTE_SMTP_PRIVATEKEY +.endif +##################################################### +### end transport/30_exim4-config_remote_smtp +##################################################### +##################################################### +### transport/30_exim4-config_remote_smtp_smarthost +##################################################### + +### transport/30_exim4-config_remote_smtp_smarthost +################################# + +# This transport is used for delivering messages over SMTP connections +# to a smarthost. The local host tries to authenticate. +# This transport is used for smarthost and satellite configurations. +# Refuse to send any messsage with over-long lines, which could have +# been received other than via SMTP. The use of message_size_limit to +# enforce this is a red herring. + +remote_smtp_smarthost: + debug_print = "T: remote_smtp_smarthost for $local_part@$domain" + driver = smtp +.ifndef IGNORE_SMTP_LINE_LENGTH_LIMIT + message_size_limit = ${if > {$max_received_linelength}{998} {1}{0}} +.endif + hosts_try_auth = <; ${if exists{CONFDIR/passwd.client} \ + {\ + ${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$host_address}}\ + }\ + {} \ + } +.ifdef REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS + hosts_avoid_tls = REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS +.endif +.ifdef REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS + hosts_require_tls = REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS +.endif +.ifdef REMOTE_SMTP_HEADERS_REWRITE + headers_rewrite = REMOTE_SMTP_HEADERS_REWRITE +.endif +.ifdef REMOTE_SMTP_RETURN_PATH + return_path = REMOTE_SMTP_RETURN_PATH +.endif +.ifdef REMOTE_SMTP_HELO_DATA + helo_data=REMOTE_SMTP_HELO_DATA +.endif +.ifdef TLS_DH_MIN_BITS +tls_dh_min_bits = TLS_DH_MIN_BITS +.endif +.ifdef REMOTE_SMTP_SMARTHOST_TLS_CERTIFICATE +tls_certificate = REMOTE_SMTP_SMARTHOST_TLS_CERTIFICATE +.endif +.ifdef REMOTE_SMTP_SMARTHOST_PRIVATEKEY +tls_privatekey = REMOTE_SMTP_SMARTHOST_PRIVATEKEY +.endif +##################################################### +### end transport/30_exim4-config_remote_smtp_smarthost +##################################################### +##################################################### +### transport/35_exim4-config_address_directory +##################################################### +# This transport is used for handling file addresses generated by alias +# or .forward files if the path ends in "/", which causes it to be treated +# as a directory name rather than a file name. + +address_directory: + debug_print = "T: address_directory for $local_part@$domain" + driver = appendfile + delivery_date_add + envelope_to_add + return_path_add + check_string = "" + escape_string = "" + maildir_format + +##################################################### +### end transport/35_exim4-config_address_directory +##################################################### +##################################################### +### retry/00_exim4-config_header +##################################################### + +###################################################################### +# RETRY CONFIGURATION # +###################################################################### + +begin retry + +##################################################### +### end retry/00_exim4-config_header +##################################################### +##################################################### +### retry/30_exim4-config +##################################################### + +### retry/30_exim4-config +################################# + +# This single retry rule applies to all domains and all errors. It specifies +# retries every 15 minutes for 2 hours, then increasing retry intervals, +# starting at 1 hour and increasing each time by a factor of 1.5, up to 16 +# hours, then retries every 6 hours until 4 days have passed since the first +# failed delivery. + +# Please note that these rules only limit the frequency of retries, the +# effective retry-time depends on the frequency of queue-running, too. +# See QUEUEINTERVAL in /etc/default/exim4. + +# Address or Domain Error Retries +# ----------------- ----- ------- + +* * F,2h,15m; G,16h,1h,1.5; F,4d,6h + +##################################################### +### end retry/30_exim4-config +##################################################### +##################################################### +### rewrite/00_exim4-config_header +##################################################### + +###################################################################### +# REWRITE CONFIGURATION # +###################################################################### + +begin rewrite + +##################################################### +### end rewrite/00_exim4-config_header +##################################################### +##################################################### +### rewrite/31_exim4-config_rewriting +##################################################### + +### rewrite/31_exim4-config_rewriting +################################# + +# This rewriting rule is particularly useful for dialup users who +# don't have their own domain, but could be useful for anyone. +# It looks up the real address of all local users in a file +.ifndef NO_EAA_REWRITE_REWRITE +*@+local_domains "${lookup{${local_part}}lsearch{/etc/email-addresses}\ + {$value}fail}" Ffrs +# identical rewriting rule for /etc/mailname +*@ETC_MAILNAME "${lookup{${local_part}}lsearch{/etc/email-addresses}\ + {$value}fail}" Ffrs +.endif + + +##################################################### +### end rewrite/31_exim4-config_rewriting +##################################################### +##################################################### +### auth/00_exim4-config_header +##################################################### + +###################################################################### +# AUTHENTICATION CONFIGURATION # +###################################################################### + +begin authenticators + + +##################################################### +### end auth/00_exim4-config_header +##################################################### +##################################################### +### auth/30_exim4-config_examples +##################################################### + +### auth/30_exim4-config_examples +################################# + +# The examples below are for server side authentication, when the +# local exim is SMTP server and clients authenticate to the local exim. + +# They allow two styles of plain-text authentication against an +# CONFDIR/passwd file whose syntax is described in exim4_passwd(5). + +# Hosts that are allowed to use AUTH are defined by the +# auth_advertise_hosts option in the main configuration. The default is +# "*", which allows authentication to all hosts over all kinds of +# connections if there is at least one authenticator defined here. +# Authenticators which rely on unencrypted clear text passwords don't +# advertise on unencrypted connections by default. Thus, it might be +# wise to set up TLS to allow encrypted connections. If TLS cannot be +# used for some reason, you can set AUTH_SERVER_ALLOW_NOTLS_PASSWORDS to +# advertise unencrypted clear text password based authenticators on all +# connections. As this is severely reducing security, using TLS is +# preferred over allowing clear text password based authenticators on +# unencrypted connections. + +# PLAIN authentication has no server prompts. The client sends its +# credentials in one lump, containing an authorization ID (which we do not +# use), an authentication ID, and a password. The latter two appear as +# $auth2 and $auth3 in the configuration and should be checked against a +# valid username and password. In a real configuration you would typically +# use $auth2 as a lookup key, and compare $auth3 against the result of the +# lookup, perhaps using the crypteq{}{} condition. + +# plain_server: +# driver = plaintext +# public_name = PLAIN +# server_condition = "${if crypteq{$auth3}{${extract{1}{:}{${lookup{$auth2}lsearch{CONFDIR/passwd}{$value}{*:*}}}}}{1}{0}}" +# server_set_id = $auth2 +# server_prompts = : +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif + +# LOGIN authentication has traditional prompts and responses. There is no +# authorization ID in this mechanism, so unlike PLAIN the username and +# password are $auth1 and $auth2. Apart from that you can use the same +# server_condition setting for both authenticators. + +# login_server: +# driver = plaintext +# public_name = LOGIN +# server_prompts = "Username:: : Password::" +# server_condition = "${if crypteq{$auth2}{${extract{1}{:}{${lookup{$auth1}lsearch{CONFDIR/passwd}{$value}{*:*}}}}}{1}{0}}" +# server_set_id = $auth1 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif +# +# cram_md5_server: +# driver = cram_md5 +# public_name = CRAM-MD5 +# server_secret = ${extract{2}{:}{${lookup{$auth1}lsearch{CONFDIR/passwd}{$value}fail}}} +# server_set_id = $auth1 + +# Here is an example of CRAM-MD5 authentication against PostgreSQL: +# +# psqldb_auth_server: +# driver = cram_md5 +# public_name = CRAM-MD5 +# server_secret = ${lookup pgsql{SELECT pw FROM users WHERE username = '${quote_pgsql:$auth1}'}{$value}fail} +# server_set_id = $auth1 + +# Authenticate against local passwords using sasl2-bin +# Requires exim_uid to be a member of sasl group, see README.Debian.gz +# plain_saslauthd_server: +# driver = plaintext +# public_name = PLAIN +# server_condition = ${if saslauthd{{$auth2}{$auth3}}{1}{0}} +# server_set_id = $auth2 +# server_prompts = : +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif +# +# login_saslauthd_server: +# driver = plaintext +# public_name = LOGIN +# server_prompts = "Username:: : Password::" +# # don't send system passwords over unencrypted connections +# server_condition = ${if saslauthd{{$auth1}{$auth2}}{1}{0}} +# server_set_id = $auth1 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif +# +# ntlm_sasl_server: +# driver = cyrus_sasl +# public_name = NTLM +# server_realm = +# server_set_id = $auth1 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif +# +# digest_md5_sasl_server: +# driver = cyrus_sasl +# public_name = DIGEST-MD5 +# server_realm = +# server_set_id = $auth1 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif + +# Authentcate against cyrus-sasl +# This is mainly untested, please report any problems to +# pkg-exim4-users@lists.alioth.debian.org. +# cram_md5_sasl_server: +# driver = cyrus_sasl +# public_name = CRAM-MD5 +# server_realm = +# server_set_id = $auth1 +# +# plain_sasl_server: +# driver = cyrus_sasl +# public_name = PLAIN +# server_realm = +# server_set_id = $auth1 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif +# +# login_sasl_server: +# driver = cyrus_sasl +# public_name = LOGIN +# server_realm = +# server_set_id = $auth1 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif + +# Authenticate against courier authdaemon + +# This is now the (working!) example from +# http://www.exim.org/eximwiki/FAQ/Policy_controls/Q0730 +# Possible pitfall: access rights on /var/run/courier/authdaemon/socket. +# plain_courier_authdaemon: +# driver = plaintext +# public_name = PLAIN +# server_condition = \ +# ${extract {ADDRESS} \ +# {${readsocket{/var/run/courier/authdaemon/socket} \ +# {AUTH ${strlen:exim\nlogin\n$auth2\n$auth3\n}\nexim\nlogin\n$auth2\n$auth3\n} }} \ +# {yes} \ +# fail} +# server_set_id = $auth2 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif + +# login_courier_authdaemon: +# driver = plaintext +# public_name = LOGIN +# server_prompts = Username:: : Password:: +# server_condition = \ +# ${extract {ADDRESS} \ +# {${readsocket{/var/run/courier/authdaemon/socket} \ +# {AUTH ${strlen:exim\nlogin\n$auth1\n$auth2\n}\nexim\nlogin\n$auth1\n$auth2\n} }} \ +# {yes} \ +# fail} +# server_set_id = $auth1 +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif + +# This one is a bad hack to support the broken version 4.xx of +# Microsoft Outlook Express which violates the RFCs by demanding +# "250-AUTH=" instead of "250-AUTH ". +# If your list of offered authenticators is other than PLAIN and LOGIN, +# you need to adapt the public_name line manually. +# It has to be the last authenticator to work and has not been tested +# well. Use at your own risk. +# See the thread entry point from +# http://www.exim.org/mail-archives/exim-users/Week-of-Mon-20050214/msg00213.html +# for the related discussion on the exim-users mailing list. +# Thanks to Fred Viles for this great work. + +# support_broken_outlook_express_4_server: +# driver = plaintext +# public_name = "\r\n250-AUTH=PLAIN LOGIN" +# server_prompts = User Name : Password +# server_condition = no +# .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS +# server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} +# .endif + +############## +# See /usr/share/doc/exim4-base/README.Debian.gz +############## + +# These examples below are the equivalent for client side authentication. +# They get the passwords from CONFDIR/passwd.client, whose format is +# defined in exim4_passwd_client(5) + +# Because AUTH PLAIN and AUTH LOGIN send the password in clear, we +# only allow these mechanisms over encrypted connections by default. +# You can set AUTH_CLIENT_ALLOW_NOTLS_PASSWORDS to allow unencrypted +# clear text password authentication on all connections. + +cram_md5: + driver = cram_md5 + public_name = CRAM-MD5 + client_name = ${extract{1}{:}{${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$value}fail}}} + client_secret = ${extract{2}{:}{${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$value}fail}}} + +# this returns the matching line from passwd.client and doubles all ^ +PASSWDLINE=${sg{\ + ${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$value}fail}\ + }\ + {\\N[\\^]\\N}\ + {^^}\ + } + +plain: + driver = plaintext + public_name = PLAIN +.ifndef AUTH_CLIENT_ALLOW_NOTLS_PASSWORDS + client_send = "<; ${if !eq{$tls_out_cipher}{}\ + {^${extract{1}{:}{PASSWDLINE}}\ + ^${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}\ + }fail}" +.else + client_send = "<; ^${extract{1}{:}{PASSWDLINE}}\ + ^${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}" +.endif + +login: + driver = plaintext + public_name = LOGIN +.ifndef AUTH_CLIENT_ALLOW_NOTLS_PASSWORDS + # Return empty string if not non-TLS AND looking up $host in passwd-file + # yields a non-empty string; fail otherwise. + client_send = "<; ${if and{\ + {!eq{$tls_out_cipher}{}}\ + {!eq{PASSWDLINE}{}}\ + }\ + {}fail}\ + ; ${extract{1}{::}{PASSWDLINE}}\ + ; ${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}" +.else + # Return empty string if looking up $host in passwd-file yields a + # non-empty string; fail otherwise. + client_send = "<; ${if !eq{PASSWDLINE}{}\ + {}fail}\ + ; ${extract{1}{::}{PASSWDLINE}}\ + ; ${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}" +.endif +##################################################### +### end auth/30_exim4-config_examples +##################################################### diff --git a/exim4/passwd.client b/exim4/passwd.client new file mode 100644 index 00000000..2f06b8d5 --- /dev/null +++ b/exim4/passwd.client @@ -0,0 +1,7 @@ +# password file used when the local exim is authenticating to a remote +# host as a client. +# +# see exim4_passwd_client(5) for more documentation +# +# Example: +### target.mail.server.example:login:password diff --git a/exim4/update-exim4.conf.conf b/exim4/update-exim4.conf.conf new file mode 100644 index 00000000..80a084cb --- /dev/null +++ b/exim4/update-exim4.conf.conf @@ -0,0 +1,31 @@ +# /etc/exim4/update-exim4.conf.conf +# +# Edit this file and /etc/mailname by hand and execute update-exim4.conf +# yourself or use 'dpkg-reconfigure exim4-config' +# +# Please note that this is _not_ a dpkg-conffile and that automatic changes +# to this file might happen. The code handling this will honor your local +# changes, so this is usually fine, but will break local schemes that mess +# around with multiple versions of the file. +# +# update-exim4.conf uses this file to determine variable values to generate +# exim configuration macros for the configuration file. +# +# Most settings found in here do have corresponding questions in the +# Debconf configuration, but not all of them. +# +# This is a Debian specific file + +dc_eximconfig_configtype='local' +dc_other_hostnames='samwise.natalieandjoshua.com' +dc_local_interfaces='127.0.0.1 ; ::1' +dc_readhost='' +dc_relay_domains='' +dc_minimaldns='false' +dc_relay_nets='' +dc_smarthost='' +CFILEMODE='644' +dc_use_split_config='false' +dc_hide_mailname='' +dc_mailname_in_oh='true' +dc_localdelivery='mail_spool' diff --git a/group b/group index 1ad32640..ae14ffe6 100644 --- a/group +++ b/group @@ -55,3 +55,4 @@ gpio:x:997: middle:x:1001: jgdye:x:1000: bind:x:113: +Debian-exim:x:114: diff --git a/group- b/group- index 9bd5b6d6..1ad32640 100644 --- a/group- +++ b/group- @@ -54,3 +54,4 @@ i2c:x:998: gpio:x:997: middle:x:1001: jgdye:x:1000: +bind:x:113: diff --git a/gshadow b/gshadow index fa95d022..d676b9a6 100644 --- a/gshadow +++ b/gshadow @@ -55,3 +55,4 @@ gpio:!:: middle:!:: jgdye:!:: bind:!:: +Debian-exim:!:: diff --git a/gshadow- b/gshadow- index f9c7973e..fa95d022 100644 --- a/gshadow- +++ b/gshadow- @@ -54,3 +54,4 @@ i2c:!:: gpio:!:: middle:!:: jgdye:!:: +bind:!:: diff --git a/init.d/exim4 b/init.d/exim4 new file mode 100755 index 00000000..8bc24e3d --- /dev/null +++ b/init.d/exim4 @@ -0,0 +1,279 @@ +#! /bin/sh +# /etc/init.d/exim4 +# +# Written by Miquel van Smoorenburg . +# Modified for Debian GNU/Linux by Ian Murdock . +# Modified for exim by Tim Cutts +# Modified for exim4 by Andreas Metzler +# and Marc Haber + +### BEGIN INIT INFO +# Provides: exim4 +# Required-Start: $remote_fs $syslog $named $network $time +# Required-Stop: $remote_fs $syslog $named $network +# Should-Start: postgresql mysql clamav-daemon greylist spamassassin +# Should-Stop: postgresql mysql clamav-daemon greylist spamassassin +# Default-Start: 2 3 4 5 +# Default-Stop: 0 1 6 +# Short-Description: exim Mail Transport Agent +# Description: exim is a Mail Transport agent +### END INIT INFO + +set -e + +test -x /usr/lib/exim4/exim4 || exit 0 + +. /lib/lsb/init-functions + +if [ -n "$EX4DEBUG" ]; then + echo "now debugging $0 $@" + set -x +fi + +LANG=C +export LANG + +#read default file +QUEUERUNNER='combined' +QUEUEINTERVAL='30m' +UPEX4OPTS='' +[ -f /etc/default/exim4 ] && . /etc/default/exim4 +PIDFILE="/run/exim4/exim.pid" +QRPIDFILE="/run/exim4/eximqr.pid" + +upex4conf() { + UPEX4CONF="update-exim4.conf" + OLDIFS="$IFS" + IFS=: + for p in $PATH; do + if [ -x "$p/$UPEX4CONF" ]; then + IFS="$OLDIFS" + $p/$UPEX4CONF $UPEX4OPTS $1 + return 0 + fi + done + IFS="$OLDIFS" +} + +# Exit if exim runs from /etc/inetd.conf +if [ -f /etc/inetd.conf ] && grep -E -q '^[[:space:]]*((\*|[[:alnum:].-]+):)?smtp[[:space:]]' /etc/inetd.conf +then + upex4conf + exit 0 +fi + + +DAEMON="/usr/sbin/exim4" +NAME="exim4" + +# this is from madduck on IRC, 2006-07-06 +# There should be a better possibility to give daemon error messages +# and/or to log things +log() +{ + case "$1" in + [[:digit:]]*) success=$1; shift;; + *) :;; + esac + log_action_begin_msg "$1"; shift + log_action_end_msg ${success:-0} "$*" +} + +start_exim() +{ + [ -e /run/exim4 ] || \ + install -d -oDebian-exim -gDebian-exim -m750 /run/exim4 + case ${QUEUERUNNER} in + combined) + start_daemon -p "$PIDFILE" \ + "$DAEMON" -bd "-q${QFLAGS}${QUEUEINTERVAL}" \ + ${COMMONOPTIONS} \ + ${QUEUERUNNEROPTIONS} \ + ${SMTPLISTENEROPTIONS} + log_progress_msg "exim4" + ;; + separate) + start_daemon -p "$PIDFILE" \ + "$DAEMON" -bd \ + ${COMMONOPTIONS} \ + ${SMTPLISTENEROPTIONS} + log_progress_msg "exim4_listener" + start_daemon -p "$QRPIDFILE" \ + "$DAEMON" -oP $QRPIDFILE \ + "-q${QFLAGS}${QUEUEINTERVAL}" \ + ${COMMONOPTIONS} \ + ${QUEUERUNNEROPTIONS} + log_progress_msg "exim4_queuerunner" + ;; + queueonly) + start_daemon -p "$PIDFILE" \ + "$DAEMON" -oP $PIDFILE \ + "-q${QFLAGS}${QUEUEINTERVAL}" \ + ${COMMONOPTIONS} \ + ${QUEUERUNNEROPTIONS} + log_progress_msg "exim4_queuerunner" + ;; + no|ppp) + start_daemon -p "$PIDFILE" \ + "$DAEMON" -bd \ + ${COMMONOPTIONS} \ + ${SMTPLISTENEROPTIONS} + log_progress_msg "exim4_listener" + ;; + nodaemon) + ;; + esac +} + +stop_exim() +{ +# we try to kill eximqr and exim SMTP listener, no matter what +# ${QUEUERUNNER} is set to, we could have switched since starting. + if [ -f "$QRPIDFILE" ]; then + killproc -p "$QRPIDFILE" "$DAEMON" + # exim does not remove the pidfile + if [ $? -eq 0 ] ; then rm -f "$QRPIDFILE" ; fi + log_progress_msg "exim4_queuerunner" + fi + if [ -f "$PIDFILE" ]; then + killproc -p "$PIDFILE" "$DAEMON" + # exim does not remove the pidfile + if [ $? -eq 0 ] ; then rm -f "$PIDFILE" ; fi + log_progress_msg "exim4_listener" + fi +} + +reload_exim() +{ + case ${QUEUERUNNER} in + combined|no|ppp|queueonly) + killproc -p "$PIDFILE" "$DAEMON" -HUP + log_progress_msg "exim4" + ;; + separate) + killproc -p "$PIDFILE" "$DAEMON" -HUP + log_progress_msg "exim4_listener" + killproc -p "$QRPIDFILE" "$DAEMON" -HUP + log_progress_msg "exim4_queuerunner" + ;; + esac +} + +kill_all_exims() +{ SIG="${1:-TERM}" + for pid in $(pidof $NAME); do + if [ "$(readlink /proc/$pid/root)" = "/" ]; then + kill -$SIG $pid + fi + done +} + +status() +{ + # the exit value of this function reflects the status of the SMTP + # service. Output shows the status of the queue runner as well. + SMTPNAME="SMTP listener daemon" + QRNAME="separate queue runner daemon" + if [ "${QUEUERUNNER}" = "combined" ]; then + SMTPNAME="combined SMTP listener and queue runner daemon" + elif [ "${QUEUERUNNER}" = "queueonly" ]; then + SMTPNAME="separate queue runner daemon" + fi + log_action_begin_msg "checking $QRNAME" + if pidofproc -p "$QRPIDFILE" "$DAEMON" >/dev/null; then + log_action_end_msg 0 "running" + else + if [ -e "$QRPIDFILE" ]; then + log_action_end_msg 1 "$QRNAME failed" + else + log_action_end_msg 0 "not running" + fi + fi + log_action_begin_msg "checking $SMTPNAME" + if pidofproc -p "$PIDFILE" "$DAEMON" >/dev/null; then + log_action_end_msg 0 "running" + exit 0 + else + if [ -e "$PIDFILE" ]; then + log_action_end_msg 1 "$SMTPNAME failed" + exit 1 + else + log_action_end_msg 0 "not running" + exit 3 + fi + fi +} + +# check for valid configuration file +isconfigvalid() +{ +if ! $DAEMON -bV > /dev/null ; then + log 1 "Warning! Invalid configuration file for $NAME. Exiting." + exit 1 +fi +} + +# check for non-empty paniclog +warn_paniclog() +{ + if [ -s "/var/log/exim4/paniclog" ]; then + if [ -z "$E4BCD_PANICLOG_NOISE" ] || grep -vq "$E4BCD_PANICLOG_NOISE" /var/log/exim4/paniclog; then + echo "ALERT: exim paniclog /var/log/exim4/paniclog has non-zero size, mail system possibly broken" 1>&2 + fi + fi +} + +case "$1" in + start) + log_daemon_msg "Starting MTA" + # regenerate exim4.conf + upex4conf + isconfigvalid + start_exim + log_end_msg 0 + warn_paniclog + ;; + stop) + log_daemon_msg "Stopping MTA" + stop_exim + log_end_msg 0 + warn_paniclog + ;; + restart) + # check whether newly generated config would work + upex4conf --check + log_daemon_msg "Stopping MTA for restart" + stop_exim + # regenerate exim4.conf + upex4conf + isconfigvalid + log_end_msg 0 + sleep 2 + log_daemon_msg "Restarting MTA" + start_exim + log_end_msg 0 + warn_paniclog + ;; + reload|force-reload) + log_daemon_msg "Reloading $NAME configuration files" + # regenerate exim4.conf + upex4conf + isconfigvalid + reload_exim + log_end_msg 0 + warn_paniclog + ;; + status) + status + ;; + force-stop) + kill_all_exims $2 + ;; + *) + echo "Usage: $0 {start|stop|restart|reload|status|force-stop}" + exit 1 + ;; +esac + +exit 0 +# vim:tabstop=2:expandtab:shiftwidth=2 diff --git a/logrotate.d/exim4-base b/logrotate.d/exim4-base new file mode 100644 index 00000000..ac31dd44 --- /dev/null +++ b/logrotate.d/exim4-base @@ -0,0 +1,9 @@ +/var/log/exim4/mainlog /var/log/exim4/rejectlog { + daily + missingok + rotate 10 + compress + delaycompress + notifempty + create 640 Debian-exim adm +} diff --git a/logrotate.d/exim4-paniclog b/logrotate.d/exim4-paniclog new file mode 100644 index 00000000..dd36d687 --- /dev/null +++ b/logrotate.d/exim4-paniclog @@ -0,0 +1,10 @@ +/var/log/exim4/paniclog { + size 10M + missingok + rotate 10 + compress + delaycompress + notifempty + create 640 Debian-exim adm +} + diff --git a/mail.rc b/mail.rc new file mode 100644 index 00000000..3fcc98d9 --- /dev/null +++ b/mail.rc @@ -0,0 +1,2 @@ +set ask askcc append dot save crt +ignore Received Message-Id Resent-Message-Id Status Mail-From Return-Path Via Delivered-To diff --git a/mailname b/mailname new file mode 100644 index 00000000..5cb6e6f0 --- /dev/null +++ b/mailname @@ -0,0 +1 @@ +samwise.natalieandjoshua.com diff --git a/passwd b/passwd index 4b0efb6d..ec544ed2 100644 --- a/passwd +++ b/passwd @@ -28,3 +28,4 @@ avahi:x:108:112:Avahi mDNS daemon,,,:/var/run/avahi-daemon:/bin/false middle:x:1001:1001:,,,:/home/middle:/bin/bash jgdye:x:1000:1000:Joshua Dye,,,:/home/jgdye:/usr/bin/zsh bind:x:109:113::/var/cache/bind:/usr/sbin/nologin +Debian-exim:x:110:114::/var/spool/exim4:/usr/sbin/nologin diff --git a/passwd- b/passwd- index 95ef16d7..4b0efb6d 100644 --- a/passwd- +++ b/passwd- @@ -1,4 +1,4 @@ -root:x:0:0:root:/root:/bin/bash +root:x:0:0:root:/root:/usr/bin/zsh daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin bin:x:2:2:bin:/bin:/usr/sbin/nologin sys:x:3:3:sys:/dev:/usr/sbin/nologin diff --git a/ppp/ip-up.d/exim4 b/ppp/ip-up.d/exim4 new file mode 100755 index 00000000..d723ff55 --- /dev/null +++ b/ppp/ip-up.d/exim4 @@ -0,0 +1,15 @@ +#!/bin/sh + +if [ -n "$EX4DEBUG" ]; then + echo "now debugging $0 $@" + set -x +fi + +[ -x /usr/lib/exim4/exim4 ] || exit 0 + +[ -f /etc/default/exim4 ] && . /etc/default/exim4 + +if [ "${QUEUERUNNER}" != "no" ] ; then +# Flush exim queue + /usr/sbin/exim4 -qqf ${QUEUERUNNEROPTIONS} ${COMMONOPTIONS} +fi diff --git a/rc0.d/K01exim4 b/rc0.d/K01exim4 new file mode 120000 index 00000000..c7776aaa --- /dev/null +++ b/rc0.d/K01exim4 @@ -0,0 +1 @@ +../init.d/exim4 \ No newline at end of file diff --git a/rc1.d/K01exim4 b/rc1.d/K01exim4 new file mode 120000 index 00000000..c7776aaa --- /dev/null +++ b/rc1.d/K01exim4 @@ -0,0 +1 @@ +../init.d/exim4 \ No newline at end of file diff --git a/rc2.d/S01exim4 b/rc2.d/S01exim4 new file mode 120000 index 00000000..c7776aaa --- /dev/null +++ b/rc2.d/S01exim4 @@ -0,0 +1 @@ +../init.d/exim4 \ No newline at end of file diff --git a/rc3.d/S01exim4 b/rc3.d/S01exim4 new file mode 120000 index 00000000..c7776aaa --- /dev/null +++ b/rc3.d/S01exim4 @@ -0,0 +1 @@ +../init.d/exim4 \ No newline at end of file diff --git a/rc4.d/S01exim4 b/rc4.d/S01exim4 new file mode 120000 index 00000000..c7776aaa --- /dev/null +++ b/rc4.d/S01exim4 @@ -0,0 +1 @@ +../init.d/exim4 \ No newline at end of file diff --git a/rc5.d/S01exim4 b/rc5.d/S01exim4 new file mode 120000 index 00000000..c7776aaa --- /dev/null +++ b/rc5.d/S01exim4 @@ -0,0 +1 @@ +../init.d/exim4 \ No newline at end of file diff --git a/rc6.d/K01exim4 b/rc6.d/K01exim4 new file mode 120000 index 00000000..c7776aaa --- /dev/null +++ b/rc6.d/K01exim4 @@ -0,0 +1 @@ +../init.d/exim4 \ No newline at end of file diff --git a/shadow b/shadow index 5b8e2659..1c49199e 100644 --- a/shadow +++ b/shadow @@ -28,3 +28,4 @@ avahi:*:17416:0:99999:7::: middle:$6$M8N7aBIv$5gaTB8ACCVT1N0DidZviQ3.T/YarR/FIkd86BUFDUxURJF32Wa.c1.KC6CNNpG5OVlBHyNcnJY2rgEkRyRvCH.:17452:0:99999:7::: jgdye:$6$taLG2n/D$WCkHqVIY3aICSXIeg9pfcjEHPX1WWlnTGO8SUqXfXM/3ns56GVKCwxeKvgvzLBF3Ix3QuenmuST9.u8E.XNYD/:17452:0:99999:7::: bind:*:17452:0:99999:7::: +Debian-exim:!:17452:0:99999:7::: diff --git a/shadow- b/shadow- index 5b8e2659..1c49199e 100644 --- a/shadow- +++ b/shadow- @@ -28,3 +28,4 @@ avahi:*:17416:0:99999:7::: middle:$6$M8N7aBIv$5gaTB8ACCVT1N0DidZviQ3.T/YarR/FIkd86BUFDUxURJF32Wa.c1.KC6CNNpG5OVlBHyNcnJY2rgEkRyRvCH.:17452:0:99999:7::: jgdye:$6$taLG2n/D$WCkHqVIY3aICSXIeg9pfcjEHPX1WWlnTGO8SUqXfXM/3ns56GVKCwxeKvgvzLBF3Ix3QuenmuST9.u8E.XNYD/:17452:0:99999:7::: bind:*:17452:0:99999:7::: +Debian-exim:!:17452:0:99999:7:::