X-Git-Url: https://git.adam-barratt.org.uk/?p=mirror%2Fdsa-puppet.git;a=blobdiff_plain;f=modules%2Fexim%2Ftemplates%2Feximconf.erb;h=589219ed22be892ab07b2e70ff56f1e4be6b883f;hp=9d29cff8feee6a2f3af41de34a56c8f976e0e6cc;hb=30914d14c748dfd87a9854645b81454238ae3dad;hpb=ece79a88f34b773b6fa07ec8bbd886311b2e3226 diff --git a/modules/exim/templates/eximconf.erb b/modules/exim/templates/eximconf.erb index 9d29cff8f..589219ed2 100644 --- a/modules/exim/templates/eximconf.erb +++ b/modules/exim/templates/eximconf.erb @@ -136,6 +136,7 @@ domainlist google_mxen = aspmx.l.google.com : gmail-smtp-in.l.google.com : \ *.aspmx.l.google.com : *.gmail-smtp-in.l.google.com domainlist single_domain_mx = +google_mxen +domainlist ipv4_only_domain_mx = +google_mxen <%- if @is_mailrelay -%> # Domains we relay for; that is domains that aren't considered local but we @@ -154,7 +155,6 @@ tls_crl = /etc/exim4/ssl/ca.crl # expensive, you can specify the networks for which a lookup is done, or # remove the setting entirely. host_lookup = * -dns_ipv4_lookup = +google_mxen # If this option is set, then any process that is running as one of the # listed users may pass a message to Exim and specify the sender's @@ -179,7 +179,7 @@ gecos_pattern = ^([^,:]*) gecos_name = $1 # Do *not* include the body of the original message in a bounce -# The combinaton of bounce_return_message and bounce_return_body +# The combination of bounce_return_message and bounce_return_body # allows us to return only the headers within a bounce bounce_return_message = true @@ -303,6 +303,10 @@ GREYLIST_LOCAL_PARTS = ${if match_domain{$domain}{+virtual_domains}\ {${lookup{$local_part}lsearch{/etc/exim4/grey_users}{$local_part}{}}}} : \ ${lookup{$local_part}lsearch{/var/lib/misc/$primary_hostname/mail-greylist}{$local_part}{}} <%- if @is_rtmaster -%> +# This subject rewrite is embedded in double-quoted strings. As such, some of +# the items need more escaping than usual, otherwise \N becomes simply "N" and +# the following \n a literal newline. +RT_SUBJECT = Subject: ${if and {{first_delivery}{match {${sg{$rh_Subject:}{\\N\\n\[\\t \]\+\\N}{ }}}{\\N(?i)(.*?)\[?debian rt\]?[:\t ]*(.*)\\N}}} {$1$2}{$h_subject:}} RT_QUEUE_MAP = /srv/rt.debian.org/mail/rt_queue_map <%- end -%> @@ -449,14 +453,17 @@ check_helo: # These are in HELO acl so that they are only run once. They increment a counter, # so we don't want it to increment per rcpt to. + # high trust warn dnslists = list.dnswl.org&0.0.0.3 log_message = Hit on list.dnswl.org for $sender_host_address set acl_c_scr = ${eval:$acl_c_scr-30} + # >= medium trust warn dnslists = list.dnswl.org&0.0.0.2 log_message = Hit on list.dnswl.org for $sender_host_address set acl_c_scr = ${eval:$acl_c_scr-20} + # any form of listing warn dnslists = list.dnswl.org log_message = Hit on list.dnswl.org for $sender_host_address set acl_c_scr = ${eval:$acl_c_scr-10} @@ -469,15 +476,18 @@ check_helo: condition = ${if eq{$host_lookup_failed}{1}} set acl_c_scr = ${eval:$acl_c_scr+20} + # HELO looks like a dynamic address (with RDNS match) warn !hosts = +debianhosts condition = ${if eq{$host_lookup_failed}{0}} condition = ${if match{$sender_host_name}{\N(^[^\.]*[0-9]\-+[0-9]|^[^\.]*[0-9]{5,}[^\.]|^([^\.]+\.)?[0-9][^ \.]*\.[^\.]+\..+\.[a-z]|^[^\.]*[0-9]\.[^\.]*[0-9]-[0-9]|^(dyn|cable|dhcp|dialup|ppp|adsl)[^\.]*[0-9])\N}} set acl_c_scr = ${eval:$acl_c_scr+20} + # HELO looks like a dynamic address warn !hosts = +debianhosts condition = ${if match{$sender_helo_name}{\N(^[^\.]*[0-9]\-+[0-9]|^[^\.]*[0-9]{5,}[^\.]|^([^\.]+\.)?[0-9][^ \.]*\.[^\.]+\..+\.[a-z]|^[^\.]*[0-9]\.[^\.]*[0-9]-[0-9]|^(dyn|cable|dhcp|dialup|ppp|adsl)[^\.]*[0-9])\N}} set acl_c_scr = ${eval:$acl_c_scr+20} + # mail from a dynamic IP address range warn !hosts = +debianhosts dnslists = dul.dnsbl.sorbs.net set acl_c_scr = ${eval:$acl_c_scr+15} @@ -687,6 +697,12 @@ check_recipient: deny condition = ${if !eq {$acl_m_prf}{PopconMail}} !verify = sender + warn !hosts = +debianhosts + condition = ${if !eq {$acl_m_prf}{PopconMail}} + condition = ${if >{${eval:$acl_c_scr+0}}{0}} + ratelimit = 10 / 60m / per_rcpt / strict / $sender_host_address + log_message = Sender rate $sender_rate / $sender_rate_period (limit: $sender_rate_limit) + defer !hosts = +debianhosts condition = ${if !eq {$acl_m_prf}{PopconMail}} condition = ${if >{${eval:$acl_c_scr+0}}{0}} @@ -805,11 +821,7 @@ check_recipient: protocol_name=${uc:$received_protocol}\n\ instance=${acl_m_grey}\n\ helo_name=${sender_helo_name}\n\ -<%- if scope.call_function('versioncmp', [@lsbmajdistrelease, '8']) <= 0 -%> - client_address=${substr_-3:${mask:$sender_host_address/24}}\n\ -<%- else -%> client_address=${sender_host_address}\n\ -<%- end -%> client_name=${sender_host_name}\n\ sender=${sender_address}\n\ recipient=$local_part@$domain\n\n @@ -817,7 +829,7 @@ check_recipient: ${readsocket{/var/run/postgrey/socket}{$acl_m_pgr}\ {5s}{}{action=DUNNO}}\ }{action=}{}} - message = ${sg{$acl_m_pgr}{^\\w+\\s*}{}} + message = ${sg{$acl_m_pgr}{\N^\w+\s*\N}{}} log_message = greylisted. condition = ${if eq{${uc:${substr{0}{5}{$acl_m_pgr}}}}{DEFER}} @@ -830,7 +842,7 @@ check_recipient: domains = +handled_domains local_parts = GREYLIST_LOCAL_PARTS condition = ${if eq{${uc:${substr_0_7:$acl_m_pgr}}}{PREPEND}} - message = ${sg{$acl_m_pgr}{^\\w+\\s*}{}} + message = ${sg{$acl_m_pgr}{\N^\w+\s*\N}{}} <%- end -%> deny hosts = ${if exists{/etc/exim4/host_blacklist}{/etc/exim4/host_blacklist}{}} @@ -854,6 +866,11 @@ check_recipient: domains = +handled_domains !hosts = +debianhosts : WHITELIST + deny message = host $sender_host_address is listed in $dnslist_domain; see $dnslist_text + dnslists = noserver.dnsbl.sorbs.net + domains = +handled_domains + !hosts = +debianhosts : WHITELIST + <%- end -%> deny message = domain $sender_address_domain is listed in $dnslist_domain; see $dnslist_text dnslists = ${if match_domain{$domain}{+virtual_domains}\ @@ -864,6 +881,11 @@ check_recipient: domains = +handled_domains !hosts = +debianhosts : WHITELIST + deny message = domain $sender_address_domain is listed in $dnslist_domain; see $dnslist_text + dnslists = nomail.rhsbl.sorbs.net/$sender_address_domain + domains = +handled_domains + !hosts = +debianhosts : WHITELIST + <%- unless @use_smarthost -%> deny domains = +handled_domains local_parts = ${if match_domain{$domain}{+virtual_domains}\ @@ -985,24 +1007,15 @@ check_message: <%- if has_variable?("clamd") && @clamd -%> discard condition = ${if eq {$acl_m_prf}{blackhole}} - <%- if scope.call_function('versioncmp', [@lsbmajdistrelease, '8']) <= 0 -%> - demime = * - <%- end -%> malware = */defer_ok log_message = discarded malware message for $recipients deny condition = ${if !eq {$acl_m_prf}{markup}} condition = ${if !eq {$acl_m_prf}{PopconMail}} - <%- if scope.call_function('versioncmp', [@lsbmajdistrelease, '8']) <= 0 -%> - demime = * - <%- end -%> malware = */defer_ok message = malware detected: $malware_name: message rejected warn condition = ${if eq {$acl_m_prf}{markup}} - <%- if scope.call_function('versioncmp', [@lsbmajdistrelease, '8']) <= 0 -%> - demime = * - <%- end -%> malware = */defer_ok message = X-malware detected: $malware_name @@ -1136,7 +1149,11 @@ dnslookup: {match_domain{$item}{+single_domain_mx}}\ {remote_smtp_single_domain}{remote_smtp}\ } - ignore_target_hosts = +reservedaddrs + ignore_target_hosts = +reservedaddrs : \ + ${if forany{${lookup dnsdb{>: mxh=$domain}}}\ + {match_domain{$item}{+ipv4_only_domain_mx}}\ + {::::/0}{}\ + } no_more postmasterish: @@ -1370,7 +1387,7 @@ rt_force_new_verbose: pipe_transport = rt_pipe data = "|/usr/bin/rt-mailgate --queue '${lookup{${sg{$local_part}{-comment}{}}}lsearch{RT_QUEUE_MAP}}' --url https://rt.debian.org/ --ca-file /etc/ssl/ca-debian/ca-certificates.crt --action ${if match{$local_part}{.*-comment.*}{comment}{correspond}}" headers_remove = Subject - headers_add = "Delivered-To: ${local_part}${local_part_suffix}@${domain}\nSubject: ${if and {{first_delivery}{match {$h_subject:}{(?is)(.*?)\\\\[?debian rt\\\\]?[:\\s]*(.*)}}} {$1$2}{$h_subject:}}" + headers_add = "Delivered-To: ${local_part}${local_part_suffix}@${domain}\nRT_SUBJECT" # FIXME: figure out how to generalize this approach so that all of the following would work # - rt+NNNN@rt.debian.org : attach correspondence to ticket (verbose) @@ -1387,7 +1404,7 @@ rt_force_new_quiesce: pipe_transport = rt_pipe data = "|/usr/bin/rt-mailgate --queue '${lookup{${sg{$local_part}{-comment}{}}}lsearch{RT_QUEUE_MAP}}' --url https://rt.debian.org/ --ca-file /etc/ssl/ca-debian/ca-certificates.crt --action ${if match{$local_part}{.*-comment.*}{comment}{correspond}}" headers_remove = Subject - headers_add = "Delivered-To: ${local_part}${local_part_suffix}@${domain}\nX-RT-Mode: quiesce\nSubject: ${if and {{first_delivery}{match {$h_subject:}{(?is)(.*?)\\\\[?debian rt\\\\]?[:\\s]*(.*)}}} {$1$2}{$h_subject:}}" + headers_add = "Delivered-To: ${local_part}${local_part_suffix}@${domain}\nX-RT-Mode: quiesce\nRT_SUBJECT" rt_otherwise: debug_print = "R: rt for $local_part@$domain" @@ -1400,7 +1417,7 @@ rt_otherwise: pipe_transport = rt_pipe data = "|/usr/bin/rt-mailgate --queue '${lookup{${sg{$local_part}{-(comment|done)}{}}}lsearch{RT_QUEUE_MAP}}' --url https://rt.debian.org/ --ca-file /etc/ssl/ca-debian/ca-certificates.crt --extension ticket --action ${if match{$local_part}{.*-comment.*}{comment}{${if match{$local_part}{.*-done.*}{correspond-resolve}{correspond}}}}" headers_remove = Subject - headers_add = "Delivered-To: ${local_part}${local_part_suffix}@${domain}\nSubject: ${if and {{first_delivery}{match {$h_subject:}{(?i)(.*?)\\\\[?debian rt\\\\]?[:\\s]*(.*)}}} {$1$2}{$h_subject:}}" + headers_add = "Delivered-To: ${local_part}${local_part_suffix}@${domain}\nRT_SUBJECT" <%- end -%> # Exim fails the router if it can't change to the user/group for delivery @@ -1674,21 +1691,37 @@ rt_pipe: # RETRY CONFIGURATION # ###################################################################### -# 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 2 hours and increasing each time by a factor of 1.5, up to 16 -# hours, then retries every 8 hours until 4 days have passed since the first -# failed delivery. - # Domain Error Retries # ------ ----- ------- - begin retry +## Note that retry rules specify when an address / host / mail should +## become eligible for retrying. They do not specify when the retry +## attempt will actually occur, as this is dependent on queue run +## frequency and timing. + +# For mail to debian.org addresses, this rule starts with +# retries every 10 minutes for 2 hours, then increasing retry intervals, +# starting at 2 hours and increasing each time by a factor of 1.5, up to 16 +# hours, then retries every 8 hours until 14 days have passed since the first +# failed delivery. debian.org * F,2h,10m; G,16h,2h,1.5; F,14d,8h + +# Bounces should get retried every 10 minutes for up to 2 hours * * senders=: F,2h,10m + +# Temporary errors at RCPT TO get retried at 5 minute intervals for +# 2 hours, then 10 minute intervals for 4 hours, and finally at 15 +# minute intervals for 4 days. This assumes that the cause of the +# error will get resolved quickly in most cases. * rcpt_4xx F,2h,5m; F,4h,10m; F,4d,15m + +# For all remaining mails, addresses and hosts, this rule starts with +# retries every 15 minutes for 2 hours, then increasing retry intervals, +# starting at 2 hours and increasing each time by a factor of 1.5, up to 16 +# hours, then retries every 8 hours until 4 days have passed since the first +# failed delivery. * * F,2h,15m; G,16h,2h,1.5; F,4d,8h # End of Exim 4 configuration