X-Git-Url: https://git.adam-barratt.org.uk/?a=blobdiff_plain;f=modules%2Fexim%2Ffiles%2Fcommon%2Fexim4.conf;h=2fbac0254c75473f624cdb32478a3a14f6787d23;hb=1b5981aee978aaf252dca412ac8c203d3cfcb863;hp=18bf9c8790bb61617987aacb1a3db10edc6645f7;hpb=31d70db13106943a93c74ecbe8daee2e5fa9cdda;p=mirror%2Fdsa-puppet.git diff --git a/modules/exim/files/common/exim4.conf b/modules/exim/files/common/exim4.conf index 18bf9c879..2fbac0254 100644 --- a/modules/exim/files/common/exim4.conf +++ b/modules/exim/files/common/exim4.conf @@ -39,6 +39,12 @@ # us. This is primarily only usefull for emergancy 'queue # flushing' operations, but should be populated with a list # of trusted machines. Wildcards are not permitted +# 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 +# that list. # The division of files is designed so that all hosts may share rcpthosts # and relayhosts, these could be replicated automatically if necessary. @@ -115,6 +121,7 @@ localpartlist local_only_users = lsearch;/etc/exim4/localusers # accept mail for them. domainlist rcpthosts = partial-lsearch;/etc/exim4/rcpthosts hostlist debianhosts = 127.0.0.1 : net-lsearch;/var/lib/misc/thishost/debianhosts +domainlist mailhubdomains = lsearch;/etc/exim4/manualroute .ifndef RESERVEDADDRS RESERVEDADDRS = 0.0.0.0/8 : 127.0.0.0/8 : 10.0.0.0/8 : 169.254.0.0/16 : \ @@ -124,6 +131,14 @@ RESERVEDADDRS = 0.0.0.0/8 : 127.0.0.0/8 : 10.0.0.0/8 : 169.254.0.0/16 : \ hostlist reservedaddrs = RESERVEDADDRS +.ifdef USE_TLS +tls_certificate = /etc/exim4/ssl/thishost.crt +tls_privatekey = /etc/exim4/ssl/thishost.key +tls_try_verify_hosts = * +tls_verify_certificates = /etc/exim4/ssl/ca.crt +tls_crl = /etc/exim4/ssl/ca.crl +.endif + #system_filter = /etc/exim4/filter #system_filter_file_transport = address_file @@ -182,14 +197,20 @@ queue_list_requires_admin = false av_scanner = CLAMAV .endif -.ifdef HAVE_USER_DEBBUGS +.ifdef HAVE_USER_DEBBUGS MAIL_RELAY STUPID_FIREWALL daemon_smtp_ports = 25 : 587 .endif +.ifdef EVEN_MORE_STUPID_FIREWALL +daemon_smtp_ports = 25 : 2025 +.endif admin_groups = adm remote_sort_domains = *.debian.org:*.debian.net pipelining_advertise_hosts = !* +.ifdef USE_TLS +tls_advertise_hosts = * +.endif smtp_enforce_sync = true log_selector = +tls_cipher +tls_peerdn +queue_time +deliver_time +smtp_connection +smtp_incomplete_transaction +smtp_confirmation @@ -298,17 +319,36 @@ 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 = : 127.0.0.1 # 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. +.ifdef MAIL_RELAY + accept verify = certificate +.endif + 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}} defer ratelimit = 5 / 60m / per_rcpt / $sender_host_address + !hosts = +debianhosts message = sorry, only 5 reports per hour for submission + accept domains = +local_domains + hosts = +debianhosts + endpass + message = unknown user + verify = recipient + + accept domains = +mailhubdomains + endpass + message = unknown user + verify = recipient/callout=30s,defer_ok,use_sender,no_cache + accept domains = +submission_domains endpass message = unknown user @@ -319,6 +359,10 @@ check_submission: #!!# ACL that is used after the RCPT command check_recipient: +.ifdef MAIL_RELAY + accept verify = certificate +.endif + # 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. @@ -476,7 +520,7 @@ check_recipient: warn domains = rt.debian.org set acl_m1 = RTMail - set acl_m12 = ${if def:acl_m12 {$acl_m12} {${if match{$local_part}{[^+]+\\+\\d+} {RTMailRecipientHasSubaddress}}}} + set acl_m12 = ${if def:acl_m12 {$acl_m12} {${if or{{match{$local_part}{[^+]+\\+\\d+}}{match{$local_part}{[^+]+\\+new}}} {RTMailRecipientHasSubaddress}}}} warn domains = packages.qa.debian.org set acl_m1 = PTSMail @@ -596,6 +640,11 @@ check_recipient: !hosts = +debianhosts : WHITELIST !verify = sender/callout + accept domains = +mailhubdomains + endpass + message = unknown user + verify = recipient/callout=30s,defer_ok,use_sender,no_cache + accept domains = +handled_domains endpass message = unknown user @@ -712,6 +761,13 @@ begin routers # An address is passed to each in turn until it is accepted. # ###################################################################### +relay_manualroute: + driver = manualroute + domains = +mailhubdomains + transport = remote_smtp + route_data = ${lookup{$domain}lsearch{/etc/exim4/manualroute}} + require_files = /etc/exim4/manualroute + bsmtp: debug_print = "R: bsmtp for $local_part@$domain" driver = manualroute @@ -732,6 +788,17 @@ ipliteral: transport = remote_smtp ignore_target_hosts = +reservedaddrs +.ifdef SMARTHOST +smarthost: + debug_print = "R: smarthost for $local_part@$domain" + driver = manualroute + domains = !+handled_domains + transport = remote_smtp_smarthost + route_list = * SMARTHOST + host_find_failed = defer + same_domain_copy_routing = yes + no_more +.endif # This router routes to remote hosts over SMTP using a DNS lookup. # Ignore reserved network responses, including localhost. dnslookup: @@ -926,7 +993,35 @@ bugs: .endif # This router delivers for rt.d.o -rt: +rt_force_new_verbose: + debug_print = "R: rt for $local_part+new@$domain" + driver = redirect + domains = rt.debian.org + require_files = /usr/bin/rt-mailgate : RT_QUEUE_MAP + local_parts = ${lookup{${sg{$local_part}{-comment}{}}}lsearch{RT_QUEUE_MAP}{$local_part}{}} + local_part_suffix = +new + pipe_transport = rt_pipe + data = "|/usr/bin/rt-mailgate --queue '${lookup{${sg{$local_part}{-comment}{}}}lsearch{RT_QUEUE_MAP}}' --url https://rt.debian.org/ --action ${if match{$local_part}{.*-comment.*}{comment}{correspond}}" + headers_add = "Delivered-To: ${local_part}${local_part_suffix}@${domain}" + +# 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) +# - rt+NNNN-quiesce@rt.debian.org : attach correspondence to ticket (quiesce) +# - rt+NNNN-@rt.debian.org : attach correspondence to ticket (some action) +# requires modification to custom condition in 'scrips' +rt_force_new_quiesce: + debug_print = "R: rt for $local_part+new-quiesce@$domain" + driver = redirect + domains = rt.debian.org + require_files = /usr/bin/rt-mailgate : RT_QUEUE_MAP + local_parts = ${lookup{${sg{$local_part}{-comment}{}}}lsearch{RT_QUEUE_MAP}{$local_part}{}} + local_part_suffix = +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/ --action ${if match{$local_part}{.*-comment.*}{comment}{correspond}}" + headers_add = "X-RT-Mode: quiesce" + headers_add = "Delivered-To: ${local_part}${local_part_suffix}@${domain}" + +rt_otherwise: debug_print = "R: rt for $local_part@$domain" driver = redirect domains = rt.debian.org @@ -1117,7 +1212,22 @@ address_reply: remote_smtp: driver = smtp connect_timeout = 1m - hosts_avoid_tls = * +.ifdef USE_TLS + tls_certificate = /etc/exim4/ssl/thishost.crt + tls_privatekey = /etc/exim4/ssl/thishost.key +.endif + +remote_smtp_smarthost: + debug_print = "T: remote_smtp_smarthost for $local_part@$domain" + driver = smtp +.ifdef SMARTHST_PORT + port = SMARTHST_PORT +.endif +.ifdef USE_TLS + tls_tempfail_tryclear = false + tls_certificate = /etc/exim4/ssl/thishost.crt + tls_privatekey = /etc/exim4/ssl/thishost.key +.endif # Send the message to procmail procmail_pipe: