X-Git-Url: https://git.adam-barratt.org.uk/?p=mirror%2Fdsa-puppet.git;a=blobdiff_plain;f=modules%2Fexim%2Ftemplates%2Feximconf.erb;h=a11e8d5de99b7f628ef9971ceafd8dcca8d973b7;hp=7cd6738a2aa5368a1df01be03f2d6f04d6465b16;hb=b245fb07a6f516d223dd5285e4e650224267b760;hpb=368e147f10b8e748f7e171a15568a94d79599039 diff --git a/modules/exim/templates/eximconf.erb b/modules/exim/templates/eximconf.erb index 7cd6738a2..a11e8d5de 100644 --- a/modules/exim/templates/eximconf.erb +++ b/modules/exim/templates/eximconf.erb @@ -8,39 +8,46 @@ # The configuration file uses a set of rules to generate an # acceptable mail environment for debian.org machines. It deviates -# considerably from what could be considered a standard exim configuration. +# considerably from what could be considered a standard Exim configuration. # This configuration file brings in the necessary information from -# other databases stored in /etc/exim/ and the files distributed by ud-ldap +# other databases stored in /etc/exim4/ and the files distributed by ud-ldap # This file is independent of the local host, it should not be changed # per machine. primary_hostname is used in all places that require per-host # settings. -# The configuration files in /etc/exim are as follows: +# The configuration files in /etc/exim4 are as follows: # locals - This is a list of domains that are considered local. A local -# domain is essential one that deliveries to /var/mail +# domain is essentially one for which deliveries to /var/mail # will be attempted. The users available for local delivery -# comes from /etc/passwd and /etc/aliases. Wildcards are not +# come from /etc/passwd and /etc/aliases. Wildcards are not # permitted. # virtualdomains - This is a list of all virtual domains. A virtual domain # is much like a local domain, execpt that the delivery location # and allowed set of users is controlled by a virtual domain # alias file and not /etc/passwd. Wildcards are permitted # relayhosts - Hostnames that can send any arbitarily addressed mail to -# us. This is primarily only usefull for emergancy 'queue +# us. This is primarily only useful for emergency 'queue # flushing' operations, but should be populated with a list # of trusted machines. Wildcards are not permitted # bsmtp_domains - Domains that we deliver locally via bsmtp +# submission-domains - Domains for which mail will be accepted via the +# submission port <%- if @is_mailrelay -%> # mailhubdomains - Domains for which we are the MX, but the mail is relayed # elsewhere. This is designed for use with small volume or # restricted machines that need to use a smarthost for mail # traffic. We will relay for them based on ssl cert validation -# but we need to teach exim how to route the mail to them. This is +# but we need to teach Exim how to route the mail to them. This is # that list. <%- end -%> +# From /var/lib/misc / UD: +# +# mail-forward.cdb - aliases for @d.o +# user-forward.cdb - aliases for @thishost.d.o + # Exim's wildcard mechanism is a bit odd in that to say "any address in # debian.org including debian.org" you must use two patterns, # *.debian.org @@ -50,9 +57,9 @@ # Further details can be found in each of the files. -# Usefull exim commands: +# Useful Exim commands: # exim4 -qf - Try sending all messages right now, including frozen ones -# exim4 -bt foo@blah - Write what exim would do if it saw the address +# exim4 -bt foo@blah - Write what Exim would do if it saw the address # Great for testing virtual domains and forward files # Special Features for users: @@ -68,7 +75,7 @@ # Heuristic check (none bad enough to cause a hard reject, but in aggregate # will trigger things like rcpt to rate limiting or possibly a reject if -# enough hits are triggered. +# enough hits are triggered). # # value is stored in acl_c_scr @@ -121,10 +128,16 @@ localpartlist local_only_users = lsearch;/etc/exim4/localusers localpartlist postmasterish = postmaster : abuse : hostmaster -hostlist debianhosts = <; ; 127.0.0.1 ; ::1 ; /var/lib/misc/thishost/debianhosts ; 89.16.166.49 ; 82.195.75.76 ; 2001:41b8:202:deb:bab5:0:52c3:4b4c +hostlist debianhosts = <; ; 127.0.0.1 ; ::1 ; /var/lib/misc/thishost/debianhosts hostlist reservedaddrs = 0.0.0.0/8 : 127.0.0.0/8 : 10.0.0.0/8 : 169.254.0.0/16 : 172.16.0.0/12 : 192.0.0.0/24 : 192.168.0.0/16 : 224.0.0.0/4 : 240.0.0.0/5 : 248.0.0.0/5 +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 # accept mail for them. @@ -142,7 +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 = !localhost (disabled upon sgrans request, zobel, 2010-03-16) # 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 @@ -159,14 +171,21 @@ local_from_check = false # Some operating systems use the "gecos" field in the system password file # to hold other information in addition to users' real names. Exim looks up # this field when it is creating "sender" and "from" headers. If these options -# are set, exim uses "gecos_pattern" to parse the gecos field, and then +# are set, Exim uses "gecos_pattern" to parse the gecos field, and then # expands "gecos_name" as the user's name. $1 etc refer to sub-fields matched # by the pattern. gecos_pattern = ^([^,:]*) gecos_name = $1 -# This tells exim to immediately discard error messages (ie double bounces). +# Do *not* include the body of the original message in a bounce +# The combination of bounce_return_message and bounce_return_body +# allows us to return only the headers within a bounce + +bounce_return_message = true +bounce_return_body = false + +# This tells Exim to immediately discard error messages (ie double bounces). ignore_bounce_errors_after = 0s auto_thaw = 1d timeout_frozen_after=14d @@ -219,15 +238,14 @@ av_scanner = clamd:/var/run/clamav/clamd.ctl ports = [] out = "daemon_smtp_ports = " ports << 25 +if @mail_port # if we have an overridden mail_port + ports << @mail_port +end if @is_bugsmx ports << 587 end -if not scope.lookupvar('deprecated::nodeinfo')['mail_port'].to_s.empty? - ports << scope.lookupvar('deprecated::nodeinfo')['mail_port'] -end - if @is_mailrelay ports << @smarthost_port end @@ -243,7 +261,23 @@ pipelining_advertise_hosts = !* tls_advertise_hosts = * smtp_enforce_sync = true -log_selector = +tls_cipher +tls_peerdn +queue_time +deliver_time +smtp_connection +smtp_incomplete_transaction +smtp_confirmation +smtp_protocol_error +log_selector = \ + +tls_cipher \ + +tls_peerdn \ + +queue_time \ + +queue_time_overall \ + +deliver_time \ + +received_recipients \ + +sender_on_delivery \ + +return_path_on_delivery \ + +incoming_port \ + +unknown_in_list \ + +smtp_connection \ + +smtp_incomplete_transaction \ + +smtp_confirmation \ + +smtp_syntax_error \ + +smtp_no_mail \ + +smtp_protocol_error received_header_text = Received: ${if def:sender_rcvhost {from $sender_rcvhost\n\t}\ {${if def:sender_ident {from ${quote_local_part:$sender_ident} }}${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}\ @@ -255,6 +289,7 @@ received_header_text = Received: ${if def:sender_rcvhost {from $sender_rcvhost\n # macro definitions. # Do not wrap! +MAX_SCAN_SIZE = 256000 VDOMAINDATA = ${lookup{$domain}partial-lsearch{/etc/exim4/virtualdomains}{$value}} VSENDERDOMAINDATA = ${lookup{$sender_address_domain}partial-lsearch{/etc/exim4/virtualdomains}{$value}} WHITELIST = ${if match_domain{$domain}{+virtual_domains}\ @@ -268,6 +303,12 @@ 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 "\[" a literal "[". +# Note that the lack of space in "Subject:${" is intentional, as the raw Subject +# header will include the leading space, if present. +RT_SUBJECT = Subject:${if and {{first_delivery}{match {${sg {$rh_Subject:}{\\n([ \\t])}{ }}}{\\N(?i)(.*?)\\[?debian rt\\]?[:\\t ]*(.*)\\N}}}{$1$2}{$h_subject:}} RT_QUEUE_MAP = /srv/rt.debian.org/mail/rt_queue_map <%- end -%> @@ -288,15 +329,16 @@ acl_spamlovers: deny acl_getprofile: - # This is a bad hack to reset the variable, by defining it be something - # never referenced. - warn set acl_m_rprf = $acl_m_undefined + # Determine the mail profile for this recipient. + # An empty string implies no match has been found. + + warn set acl_m_rprf = warn recipients = survey@popcon.debian.org set acl_m_rprf = PopconMail - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} warn local_parts = +local_only_users domains = +local_domains @@ -310,92 +352,92 @@ acl_getprofile: set acl_m_rprf = localonly <%- end -%> - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} <%- if @is_rtmaster -%> warn domains = rt.debian.org set acl_m_rprf = RTMail - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} <%- end -%> <%- if @is_bugsmx -%> warn domains = bugs.debian.org set acl_m_rprf = BugsMail - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} <%- end -%> <%- if @is_packagesmaster -%> warn domains = packages.debian.org set acl_m_rprf = PackagesMail - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} <%- end -%> <%- if @is_packagesqamaster -%> warn recipients = owner@packages.qa.debian.org : postmaster@packages.qa.debian.org set acl_m_rprf = PTSOwner - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} warn senders = : domains = packages.qa.debian.org condition = ${if match{$local_part}{\N^bounces+\N}} set acl_m_rprf = PTSListBounce - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} warn domains = packages.qa.debian.org set acl_m_rprf = PTSMail - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} <%- end -%> warn recipients = change@db.debian.org : changes@db.debian.org : chpasswd@db.debian.org : ping@db.debian.org : recommend@nm.debian.org set acl_m_rprf = DBSignedMail - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} warn domains = +virtual_domains condition = ${if exists {${extract{directory}{VDOMAINDATA}{${value}/contentinspectionaction}}}} condition = ${if eq{${lookup{$local_part}lsearch*{${extract{directory}{VDOMAINDATA}{${value}/contentinspectionaction}}}{$value}{}}}{markup}} set acl_m_rprf = markup - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} warn domains = +virtual_domains condition = ${if exists {${extract{directory}{VDOMAINDATA}{${value}/contentinspectionaction}}}} condition = ${if eq{${lookup{$local_part}lsearch*{${extract{directory}{VDOMAINDATA}{${value}/contentinspectionaction}}}{$value}{}}}{blackhole}} set acl_m_rprf = blackhole - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} warn domains = +virtual_domains condition = ${if exists {${extract{directory}{VDOMAINDATA}{${value}/contentinspectionaction.cdb}}}} condition = ${if eq{${lookup{$local_part}cdb{${extract{directory}{VDOMAINDATA}{${value}/contentinspectionaction.cdb}}}{$value}{}}}{markup}} set acl_m_rprf = markup - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} warn domains = +virtual_domains condition = ${if exists {${extract{directory}{VDOMAINDATA}{${value}/contentinspectionaction.cdb}}}} condition = ${if eq{${lookup{$local_part}cdb{${extract{directory}{VDOMAINDATA}{${value}/contentinspectionaction.cdb}}}{$value}{}}}{blackhole}} set acl_m_rprf = blackhole - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} warn domains = +local_domains condition = ${if eq{${lookup{$local_part}cdb{/var/lib/misc/${primary_hostname}/mail-contentinspectionaction.cdb}{$value}{}}}{markup}} set acl_m_rprf = markup - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} warn domains = +local_domains condition = ${if eq{${lookup{$local_part}cdb{/var/lib/misc/${primary_hostname}/mail-contentinspectionaction.cdb}{$value}{}}}{blackhole}} set acl_m_rprf = blackhole - accept condition = ${if eq {$acl_m_rprf}{}{no}{yes}} + accept condition = ${if !eq {$acl_m_rprf}{}} warn set acl_m_rprf = normal @@ -409,23 +451,26 @@ check_helo: accept verify = certificate <%- end -%> -<%- unless @smarthost -%> +<%- unless @use_smarthost -%> # 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} - warn condition = ${if isip {$sender_helo_name}{true}{false}} + warn condition = ${if isip {$sender_helo_name}} log_message = remote host used IP address in HELO/EHLO greeting set acl_c_scr = ${eval:$acl_c_scr+20} @@ -433,15 +478,18 @@ 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} @@ -452,9 +500,9 @@ check_helo: # if rDNS does not match helo name (both lower cased first), greylist. warn !hosts = +debianhosts - condition = ${if eq {$host_lookup_failed}{1}{no}{yes}} - condition = ${if def:sender_helo_name {yes}{no}} - condition = ${if eq {${lc:$sender_helo_name}}{${lc:$sender_host_name}}{no}{yes}} + condition = ${if !eq {$host_lookup_failed}{1}} + condition = ${if def:sender_helo_name} + condition = ${if !eq {${lc:$sender_helo_name}}{${lc:$sender_host_name}}} log_message = HELO doesn't match rDNS set acl_c_scr = ${eval:$acl_c_scr+8} @@ -479,7 +527,7 @@ check_helo: # skip matching on machines named .*smtp.*, since that's 4 already. This is a fairly # naive test, so it's not worth much - warn condition = ${if match {${lc:$sender_helo_name}}{smtp}{no}{yes}} + warn condition = ${if !match {${lc:$sender_helo_name}}{smtp}} condition = ${if match {${lc:$sender_helo_name}}{\N^[a-z0-9]+\.[a-z]+$\N}} condition = ${if match {${lc:$sender_helo_name}}{\N.*[bcdfghjklmnpqrstvwxz]{7,}.*\.[a-z]+$\N}} log_message = random HELO @@ -497,8 +545,6 @@ check_helo: #!!# ACL that is used after the RCPT command on the submission port check_submission: - # 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 = +debianhosts <%- if @is_mailrelay -%> @@ -506,11 +552,11 @@ check_submission: <%- end -%> # Defer after too many bad RCPT TO's. Legit MTAs will retry later. - # This is a rough pass at preventing addres harvesting or other mail blasts. + # This is a rough pass at preventing address harvesting or other mail blasts. defer log_message = Too many bad recipients ${eval:$rcpt_fail_count} out of $rcpt_count message = Too many bad recipients, try again later - condition = ${if > {${eval:$rcpt_fail_count}}{3}{yes}{no}} + condition = ${if > {${eval:$rcpt_fail_count}}{3}} defer ratelimit = 5 / 60m / per_rcpt / $sender_host_address @@ -546,7 +592,7 @@ check_recipient: condition = ${if eq{$acl_m_prf}{}} set acl_m_prf = $acl_m_rprf - defer condition = ${if eq{$acl_m_prf}{$acl_m_rprf}{no}{yes}} + defer condition = ${if !eq{$acl_m_prf}{$acl_m_rprf}} message = Different profile, please retry log_message = Only one profile at a time, please @@ -557,13 +603,13 @@ check_recipient: !acl = acl_spamlovers message = Too many bad recipients, try again later !hosts = +debianhosts - condition = ${if > {${eval:$rcpt_fail_count}}{3}{yes}{no}} + condition = ${if > {${eval:$rcpt_fail_count}}{3}} # Dump spambots that are so stupid they say helo as our IP address drop !hosts = +debianhosts !acl = acl_spamlovers - condition = ${if eq {$sender_helo_name}{$interface_address}{yes}{no}} + condition = ${if eq {$sender_helo_name}{$interface_address}} message = HELO mismatch Forged HELO for ($sender_helo_name) # Also for spambots that say helo as us or one of our domains @@ -585,16 +631,16 @@ check_recipient: defer !hosts = +debianhosts !acl = acl_spamlovers - condition = ${if eq{$acl_m_frg}{}{no}{yes}} - condition = ${if eq{$sender_host_name}{}{yes}{no}} - condition = ${if eq{$host_lookup_failed}{1}{no}{yes}} + condition = ${if !eq{$acl_m_frg}{}} + condition = ${if eq{$sender_host_name}{}} + condition = ${if !eq{$host_lookup_failed}{1}} message = Access temporarily denied. Resolve failed PTR for $sender_host_address # If DNS works, go ahead and reject them drop !hosts = +debianhosts !acl = acl_spamlovers - condition = ${if and { {!eq{$acl_m_frg}{}}{!match{$sender_host_name}{${rxquote:$acl_m_frg}\N$\N}}}{yes}{no}} + condition = ${if and { {!eq{$acl_m_frg}{}}{!match{$sender_host_name}{${rxquote:$acl_m_frg}\N$\N}}}} message = HELO mismatch Forged HELO for ($sender_helo_name) # disabled accounts don't even get local mail. @@ -636,8 +682,8 @@ check_recipient: hosts = !+debianhosts message = mail from <$sender_address> not allowed externally - deny condition = ${if match_domain{$sender_address_domain}{+virtual_domains}{1}{0}} - condition = ${if exists {${extract{directory}{VSENDERDOMAINDATA}{${value}/neversenders}}}{1}{0}} + deny sender_domains= +virtual_domains + condition = ${if exists {${extract{directory}{VSENDERDOMAINDATA}{${value}/neversenders}}}} condition = ${lookup{$sender_address_local_part}lsearch{${extract{directory}{VSENDERDOMAINDATA}{${value}/neversenders}}}{true}} message = no mail should ever come from <$sender_address> @@ -650,26 +696,25 @@ check_recipient: message = X-Packages-FromTo-Same: yes <%- end -%> - deny condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + 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}{no}{yes}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} condition = ${if >{${eval:$acl_c_scr+0}}{0}} ratelimit = 10 / 60m / per_rcpt / $sender_host_address message = slow down (no reverse dns, mismatched ehlo, dialup, or in blacklists) <%- if has_variable?("policydweight") && @policydweight -%> - # Check with policyd-weight - this only works with a version after etch's, - # sadly. etch's version attempts to hold the socket open, since that's what - # postfix expects. Exim, on the other hand, expects the remote side to close - # the socket when it's finished sending data, so it see each transaction as - # an incomplete read. I'm sure there's a way we could force exim to do - # something sick and clever to force either the interpretation or the socket - # closure, but I'm fairly sure it's now worth it, since the backport of - # policyd-weight is trivial. + # Check with policyd-weight warn !hosts = +debianhosts - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} set acl_m_pw = ${readsocket{inet:127.0.0.1:12525}\ {request=smtpd_access_policy\n\ protocol_state=RCPT\n\ @@ -687,39 +732,39 @@ check_recipient: # Defer on socket error defer !hosts = +debianhosts - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} - condition = ${if eq{$acl_m_pw}{socket failure}{yes}{no}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} + condition = ${if eq{$acl_m_pw}{socket failure}} message = Cannot connect to policyd-weight. Please try again later. # Set proposed action to $acl_m_act and message to $acl_m_mes warn !hosts = +debianhosts - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} set acl_m_mes = ${extract{action}{$acl_m_pw}} set acl_m_act = ${sg{$acl_m_pw}{\Naction=[^ ]+ (.*)\n\n\N}{\$1}} # Add X-policyd-weight header line to message warn !hosts = +debianhosts - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} message = $acl_m_mes - condition = ${if eq{$acl_m_act}{PREPEND}{yes}{no}} + condition = ${if eq{$acl_m_act}{PREPEND}} # Write log message, if policyd-weight can't run checks warn !hosts = +debianhosts - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} log_message = policyd-weight message: $acl_m_mes - condition = ${if eq{$acl_m_act}{DUNNO}{yes}{no}} + condition = ${if eq{$acl_m_act}{DUNNO}} # Deny mails which policyd-weight thinks are spam deny !hosts = +debianhosts - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} message = policyd-weight said: $acl_m_mes - condition = ${if eq{$acl_m_act}{550}{yes}{no}} + condition = ${if eq{$acl_m_act}{550}} # Defer messages when policyd-weight suggests so. defer !hosts = +debianhosts - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} message = policyd-weight said: $acl_m_mes - condition = ${if eq{$acl_m_act}{450}{yes}{no}} + condition = ${if eq{$acl_m_act}{450}} <%- end -%> <%- if @is_rtmaster -%> @@ -745,7 +790,7 @@ check_recipient: {/etc/greylistd/whitelist-hosts}{}} : \ ${if exists {/var/lib/greylistd/whitelist-hosts}\ {/var/lib/greylistd/whitelist-hosts}{}} - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} !authenticated = * domains = +handled_domains condition = ${readsocket{/var/run/greylistd/socket}\ @@ -761,15 +806,15 @@ check_recipient: warn !senders = : !hosts = : +debianhosts : WHITELIST - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} - condition = ${if def:acl_m_grey {no}{yes}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} + condition = ${if ! def:acl_m_grey} set acl_m_grey = $pid.$tod_epoch.$sender_host_port # and defers the message if postgrey thinks it should be defered ... defer !senders = : !hosts = : +debianhosts : WHITELIST - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} !authenticated = * domains = +handled_domains local_parts = GREYLIST_LOCAL_PARTS @@ -778,11 +823,7 @@ 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 @@ -790,7 +831,7 @@ 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}} @@ -798,12 +839,12 @@ check_recipient: warn !senders = : !hosts = : +debianhosts : WHITELIST - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} !authenticated = * 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}{}} @@ -817,7 +858,7 @@ check_recipient: accept local_parts = +postmasterish domains = +virtual_domains : +bsmtp_domains -<%- unless @smarthost -%> +<%- unless @use_smarthost -%> deny message = host $sender_host_address is listed in $dnslist_domain; see $dnslist_text dnslists = ${if match_domain{$domain}{+virtual_domains}\ {${if exists {${extract{directory}{VDOMAINDATA}{${value}/rbllist}}}\ @@ -827,6 +868,11 @@ 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}\ @@ -837,7 +883,12 @@ check_recipient: domains = +handled_domains !hosts = +debianhosts : WHITELIST -<%- unless @smarthost -%> + 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}\ {${if exists {${extract{directory}{VDOMAINDATA}{${value}/callout_users}}}\ @@ -871,26 +922,34 @@ acl_check_mime: accept verify = certificate accept hosts = +debianhosts - discard condition = ${if <{$message_size}{256000}} + discard condition = ${if <{$message_size}{MAX_SCAN_SIZE}} condition = ${if eq {$acl_m_prf}{blackhole}} set acl_m_srb = ${perl{surblspamcheck}} - condition = ${if eq{$acl_m_srb}{false}{no}{yes}} + condition = ${if !eq{$acl_m_srb}{false}} log_message = discarded surbl message for $recipients - deny condition = ${if <{$message_size}{256000}} - condition = ${if eq {$acl_m_prf}{markup}{no}{yes}} - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + deny condition = ${if <{$message_size}{MAX_SCAN_SIZE}} + condition = ${if !eq {$acl_m_prf}{markup}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} set acl_m_srb = ${perl{surblspamcheck}} - condition = ${if eq{$acl_m_srb}{false}{no}{yes}} + condition = ${if !eq{$acl_m_srb}{false}} log_message = $acl_m_srb message = $acl_m_srb - warn condition = ${if <{$message_size}{256000}} + warn condition = ${if <{$message_size}{MAX_SCAN_SIZE}} condition = ${if eq {$acl_m_prf}{markup}} set acl_m_srb = ${perl{surblspamcheck}} - condition = ${if eq{$acl_m_srb}{false}{no}{yes}} + condition = ${if !eq{$acl_m_srb}{false}} message = X-Surbl-Hit: $primary_hostname: $acl_m_srb + # Dump MIME parts to disk. "default" creates sequentially-named files + # in /scan// which should then be + # automagically unlinked after processing. + warn decode = default + + # Log some information about attachments for debugging + warn log_message = MIME part [$mime_part_count] -> [${extract{-1}{.}{${lc:$mime_filename}}}] [$mime_content_type] + accept <%- end -%> @@ -904,7 +963,7 @@ acl_check_predata: #!!# ACL that is used after the DATA command check_message: - # Some people put from hostmaster@something.debian.org in the From + # Some people put from postmaster@something.debian.org in the From # header. Take their crack pipe away. drop condition = ${if match{${lc:$h_From:}}{\Npostmaster@([^.]+\.)?debian\.org\N}} @@ -919,7 +978,7 @@ check_message: <%- if @is_packagesqamaster -%> deny !hosts = +debianhosts condition = ${if eq {$acl_m_prf}{PTSMail}} - condition = ${if def:h_X-PTS-Approved:{false}{true}} + condition = ${if !def:h_X-PTS-Approved:} message = messages to the PTS require an X-PTS-Approved header <%- end -%> @@ -936,7 +995,7 @@ check_message: accept verify = certificate accept hosts = +debianhosts - deny condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + deny condition = ${if !eq {$acl_m_prf}{PopconMail}} !verify = header_syntax message = Invalid header syntax: $acl_verify_message @@ -947,63 +1006,54 @@ check_message: condition = ${if or {{match {$rh_Subject:}{[\200-\377]}}\ {match {$rh_To:}{[\200-\377]}}\ {match {$rh_From:}{[\200-\377]}}\ - {match {$rh_Cc:}{[\200-\377]}}}{true}{false}} - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + {match {$rh_Cc:}{[\200-\377]}}}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} message = improper use of 8-bit data in message header: message rejected deny - condition = ${if match {$rh_Subject:}{[^[:print:]]\{8\}}{true}{false}} - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + condition = ${if match {$rh_Subject:}{[^[:print:]]\{8\}}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} message = Your mailer is not RFC 2047 compliant: message rejected <%- 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}{no}{yes}} - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} - <%- if scope.call_function('versioncmp', [@lsbmajdistrelease, '8']) <= 0 -%> - demime = * - <%- end -%> + deny condition = ${if !eq {$acl_m_prf}{markup}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} 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 <%- end -%> <%- if @heavy -%> - discard condition = ${if <{$message_size}{256000}} + discard condition = ${if <{$message_size}{MAX_SCAN_SIZE}} condition = ${if eq {$acl_m_prf}{blackhole}} set acl_m_srb = ${perl{surblspamcheck}} - condition = ${if eq{$acl_m_srb}{false}{no}{yes}} + condition = ${if !eq{$acl_m_srb}{false}} log_message = discarded surbl message for $recipients - deny condition = ${if <{$message_size}{256000}} - condition = ${if eq {$acl_m_prf}{markup}{no}{yes}} - condition = ${if eq {$acl_m_prf}{PopconMail}{no}{yes}} + deny condition = ${if <{$message_size}{MAX_SCAN_SIZE}} + condition = ${if !eq {$acl_m_prf}{markup}} + condition = ${if !eq {$acl_m_prf}{PopconMail}} set acl_m_srb = ${perl{surblspamcheck}} - condition = ${if eq{$acl_m_srb}{false}{no}{yes}} + condition = ${if !eq{$acl_m_srb}{false}} log_message = $acl_m_srb message = $acl_m_srb - warn condition = ${if <{$message_size}{256000}} + warn condition = ${if <{$message_size}{MAX_SCAN_SIZE}} condition = ${if eq {$acl_m_prf}{markup}} set acl_m_srb = ${perl{surblspamcheck}} - condition = ${if eq{$acl_m_srb}{false}{no}{yes}} + condition = ${if !eq{$acl_m_srb}{false}} message = X-Surbl-Hit: $primary_hostname: $acl_m_srb <%- end -%> # Check header_sender except for survey@popcon.d.o - deny condition = ${if eq{$acl_m_prf}{PopconMail}{false}{true}} + deny condition = ${if !eq{$acl_m_prf}{PopconMail}} !verify = header_sender message = No valid sender found in the From:, Sender: and Reply-to: headers @@ -1014,7 +1064,7 @@ check_message: !authenticated = * !verify = certificate !hosts = +debianhosts - condition = ${if <{$message_size}{256000}} + condition = ${if <{$message_size}{MAX_SCAN_SIZE}} spam = pkg_user : true condition = ${if >{$spam_score_int}{59}} @@ -1056,9 +1106,13 @@ begin routers <%- if @is_mailrelay -%> relay_manualroute: + debug_print = "R: relay_manualroute for $local_part@$domain" driver = manualroute domains = +mailhubdomains - transport = remote_smtp + transport = ${if forany{${lookup dnsdb{>: mxh=$domain}}}\ + {match_domain{$item}{+single_domain_mx}}\ + {remote_smtp_single_domain}{remote_smtp}\ + } route_data = ${lookup{$domain}lsearch{/etc/exim4/manualroute}} require_files = /etc/exim4/manualroute @@ -1083,9 +1137,9 @@ ipliteral: transport = remote_smtp ignore_target_hosts = +reservedaddrs -<%- if @smarthost -%> +<%- if @use_smarthost -%> smarthost: - debug_print = \"R: smarthost for $local_part@$domain\" + debug_print = "R: smarthost for $local_part@$domain" driver = manualroute domains = !+handled_domains transport = remote_smtp_smarthost @@ -1101,8 +1155,15 @@ dnslookup: debug_print = "R: dnslookup for $local_part@$domain" driver = dnslookup domains = !+handled_domains - transport = remote_smtp - ignore_target_hosts = +reservedaddrs + transport = ${if forany{${lookup dnsdb{>: mxh=$domain}}}\ + {match_domain{$item}{+single_domain_mx}}\ + {remote_smtp_single_domain}{remote_smtp}\ + } + ignore_target_hosts = +reservedaddrs : \ + ${if forany{${lookup dnsdb{>: mxh=$domain}}}\ + {match_domain{$item}{+ipv4_only_domain_mx}}\ + {::::/0}{}\ + } no_more postmasterish: @@ -1142,9 +1203,9 @@ system_aliases: # 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. -# For standard debian setup of one group per user, it is acceptable---normal +# For standard Debian setup of one group per user, it is acceptable---normal # even---for .forward to be group writable. If you have everyone in one -# group, you should comment out the "modemask" line. Without it, the exim +# group, you should comment out the "modemask" line. Without it, the Exim # default of 022 will apply, which is probably what you want. userforward_verify: @@ -1178,7 +1239,7 @@ userforward_verify: router_home_directory = ${lookup passwd{$local_part}{${extract{5}{:}{$value}}}fail} verify_only -# This is a senmailesque alias file lookup +# This is a sendmailesque alias file lookup virt_aliases: debug_print = "R: virt_aliases for $local_part@$domain" driver = redirect @@ -1336,7 +1397,7 @@ 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}@${domain}\nRT_SUBJECT" # FIXME: figure out how to generalize this approach so that all of the following would work # - rt+NNNN@rt.debian.org : attach correspondence to ticket (verbose) @@ -1353,7 +1414,7 @@ rt_force_new_quiesce: pipe_transport = rt_pipe data = "|/usr/bin/rt-mailgate --queue '${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" @@ -1366,11 +1427,11 @@ 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 -%> -# exim4 fails the router if it can't change to the user/group for delivery -# during verification. So we have to seperate the cases of verifying +# Exim fails the router if it can't change to the user/group for delivery +# during verification. So we have to separate the cases of verifying # the virts, and delivering to them. blah. virt_direct_verify: @@ -1455,17 +1516,13 @@ virt_users: local_part_suffix_optional retry_use_local_part -<%= -out = "" -if @is_bugsmx - domain = 'bugs.debian.org' - out = ' +<%- if @is_bugsmx -%> # This router delivers for bugs.d.o bugs: debug_print = "R: bugs for $local_part@$domain" driver = accept transport = bugs_pipe - domains = ' + domain + ' + domains = bugs.debian.org cannot_route_message = Unknown or archived bug require_files = /srv/bugs.debian.org/mail/run-procmail no_more @@ -1474,10 +1531,7 @@ bugs: {\N^(\d+)(\d{2})(?:-(?:(?:submit|maintonly|quiet|forwarded|done|close|request|submitter)|(?:unsubscribe|ignore|help|(?:sub(?:scribe|help|yes|approve|reject))|unsubyes|bounce|probe|approve|reject|setlistyes|setlistsilentyes).*))?$\N}\ {${if exists{/srv/bugs.debian.org/spool/db-h/$2/$1$2.summary}\ {$local_part}fail}}fail} -' -end -out -%> +<%- end -%> ###################################################################### # TRANSPORTS CONFIGURATION # ###################################################################### @@ -1488,11 +1542,12 @@ out begin transports -# This transport is used for local delivery to user mailboxes. On debian +# This transport is used for local delivery to user mailboxes. On Debian # systems group mail is used so we can write to the /var/mail # directory. (The alternative, which most other unixes use, is to deliver # as the user's own group, into a sticky-bitted directory) local_delivery: + debug_print = "T: local_delivery for $local_part@$domain" driver = appendfile file = /var/mail/${local_part} group = mail @@ -1509,6 +1564,7 @@ local_delivery: # want this to happen only when the pipe fails to complete normally. address_pipe: + debug_print = "T: address_pipe for $local_part@$domain" driver = pipe current_directory = ${home} environment = "EXTENSION=${substr_1:${local_part_suffix}}:\ @@ -1523,10 +1579,12 @@ address_pipe: # mentioned elsewhere in this configuration file. address_file: + debug_print = "T: address_file for $local_part@$domain" driver = appendfile return_path_add address_file_group: + debug_print = "T: address_file_group for $local_part@$domain" driver = appendfile return_path_add mode = 0660 @@ -1549,6 +1607,7 @@ address_file_group: # are passed to address_directory. address_directory: + debug_print = "T: address_directory for $local_part@$domain" driver = appendfile check_string = maildir_format @@ -1560,36 +1619,49 @@ address_directory: # option of the forwardfile director. It has a conventional name, since it # is not actually mentioned elsewhere in this configuration file. address_reply: + debug_print = "T: address_reply for $local_part@$domain" driver = autoreply # This transport is used for delivering messages over SMTP connections. remote_smtp: + debug_print = "T: remote_smtp for $local_part@$domain" driver = smtp connect_timeout = 15s delay_after_cutoff = false tls_certificate = /etc/exim4/ssl/thishost.crt tls_privatekey = /etc/exim4/ssl/thishost.key -<%- if @smarthost -%> +remote_smtp_single_domain: + debug_print = "T: remote_smtp_single_domain for $local_part@$domain" + driver = smtp + connect_timeout = 15s + delay_after_cutoff = false + no_multi_domain + tls_certificate = /etc/exim4/ssl/thishost.crt + tls_privatekey = /etc/exim4/ssl/thishost.key + +<%- if @use_smarthost -%> remote_smtp_smarthost: debug_print = "T: remote_smtp_smarthost for $local_part@$domain" driver = smtp delay_after_cutoff = false port = <%= @smarthost_port %> tls_tempfail_tryclear = false - hosts_require_tls = <%= scope.lookupvar('deprecated::nodeinfo')['smarthost'] %> + hosts_require_tls = <%= @smarthost %> tls_certificate = /etc/exim4/ssl/thishost.crt tls_privatekey = /etc/exim4/ssl/thishost.key <%- end -%> # Send the message to procmail procmail_pipe: + debug_print = "T: procmail_pipe for $local_part@$domain" driver = pipe command = /usr/bin/procmail -a ${substr_1:${local_part_suffix}} return_path_add user = ${local_part} bsmtp: + debug_print = "T: bsmtp for $local_part@$domain" driver = appendfile batch_max = 100 file = ${host} @@ -1603,6 +1675,7 @@ bsmtp: <%- if @is_bugsmx -%> bugs_pipe: + debug_print = "T: bugs_pipe for $local_part@$domain" driver = pipe command = /srv/bugs.debian.org/mail/run-procmail environment = "EXTENSION=${substr_1:${local_part_suffix}}:\ @@ -1628,21 +1701,37 @@ 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