476 lines
15 KiB
Nix
476 lines
15 KiB
Nix
{ config, pkgs, ... }:
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let
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inherit (builtins) toFile;
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inherit (pkgs.lib.attrsets) mapAttrs;
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inherit (pkgs.lib.strings) concatMapStringsSep;
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in
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{
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services.exim =
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let
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retiolumHostname = "${config.networking.hostName}.retiolum";
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internet-aliases = with config.krebs.users; [
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{ from = "tomislav@viljetic.de"; to = tv.mail; }
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# (mindestens) lisp-stammtisch und elli haben die:
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{ from = "tv@viljetic.de"; to = tv.mail; }
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{ from = "tv@destroy.dyn.shackspace.de"; to = tv.mail; }
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{ from = "mirko@viljetic.de"; to = mv.mail; }
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# TODO killme (wo wird die benutzt?)
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{ from = "tv@cd.retiolum"; to = tv.mail; }
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# TODO lists@smtp.retiolum [consul]
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{ from = "postmaster@krebsco.de"; to = tv.mail; }
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];
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system-aliases = [
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{ from = "mailer-daemon"; to = "postmaster"; }
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{ from = "postmaster"; to = "root"; }
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{ from = "nobody"; to = "root"; }
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{ from = "hostmaster"; to = "root"; }
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{ from = "usenet"; to = "root"; }
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{ from = "news"; to = "root"; }
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{ from = "webmaster"; to = "root"; }
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{ from = "www"; to = "root"; }
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{ from = "ftp"; to = "root"; }
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{ from = "abuse"; to = "root"; }
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{ from = "noc"; to = "root"; }
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{ from = "security"; to = "root"; }
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{ from = "root"; to = "tv"; }
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{ from = "mirko"; to = "mv"; }
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];
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to-lsearch = concatMapStringsSep "\n" ({ from, to }: "${from}: ${to}");
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lsearch =
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mapAttrs (name: set: toFile name (to-lsearch set)) {
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inherit internet-aliases;
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inherit system-aliases;
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};
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in
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{
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enable = true;
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config =
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''
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primary_hostname = ${retiolumHostname}
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# HOST_REDIR contains the real destinations for "local_domains".
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#HOST_REDIR = /etc/exim4/host_redirect
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# Domains not listed in local_domains need to be deliverable remotely.
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# XXX We abuse local_domains to mean "domains, we're the gateway for".
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domainlist local_domains = @ : localhost
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#: viljetic.de : SHACK_REDIR_HOSTNAME
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domainlist relay_to_domains =
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hostlist relay_from_hosts = <; 127.0.0.1 ; ::1 ; 10.243.13.37
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acl_smtp_rcpt = acl_check_rcpt
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acl_smtp_data = acl_check_data
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# av_scanner = clamd:/tmp/clamd
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# spamd_address = 127.0.0.1 783
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# tls_advertise_hosts = *
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# tls_certificate = /etc/ssl/exim.crt
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# tls_privatekey = /etc/ssl/exim.pem
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# (debian) tls_verify_certificates (to check client certs)
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# daemon_smtp_ports = 25 : 465 : 587
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# tls_on_connect_ports = 465
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# qualify_domain defaults to primary_hostname
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# qualify_recipient defaults to qualify_domain
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# allow_domain_literals
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never_users = root
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host_lookup = *
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# ident callbacks for all incoming SMTP calls
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rfc1413_hosts = *
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rfc1413_query_timeout = 5s
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# sender_unqualified_hosts =
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# recipient_unqualified_hosts =
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# percent_hack_domains =
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# arch & debian
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#ignore_bounce_errors_after = 2d
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#timeout_frozen_after = 7d
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# debian
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#smtp_banner = $smtp_active_hostname ESMTP Exim $version_number $tod_full
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#freeze_tell = postmaster
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#trusted_users = uucp
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# arch
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#split_spool_directory = true
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log_selector = -queue_run +address_rewrite +all_parents +queue_time
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log_file_path = syslog
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syslog_timestamp = false
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syslog_duplication = false
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begin acl
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acl_check_rcpt:
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# Accept if the source is local SMTP (i.e. not over TCP/IP).
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# We do this by testing for an empty sending host field.
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accept hosts = :
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# arch & debian:
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control = dkim_disable_verify
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deny message = Restricted characters in address
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domains = +local_domains
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local_parts = ^[.] : ^.*[@%!/|]
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deny message = Restricted characters in address
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domains = !+local_domains
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local_parts = ^[./|] : ^.*[@%!] : ^.*/\\.\\./
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accept local_parts = postmaster
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domains = +local_domains
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## feature RETIOLUM_MAIL
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#accept
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# hosts = *.retiolum
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# domains = *.retiolum
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# control = dkim_disable_verify
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#require verify = sender
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accept hosts = +relay_from_hosts
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control = submission
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# debian: control = submission/sender_retain
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# arch & debian:
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control = dkim_disable_verify
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accept authenticated = *
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control = submission
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control = dkim_disable_verify
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accept message = relay not permitted 2
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recipients = lsearch;${lsearch.internet-aliases}
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require message = relay not permitted
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domains = +local_domains : +relay_to_domains
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require
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message = unknown user
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verify = recipient/callout
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# deny message = rejected because $sender_host_address is in a black list at $dnslist_domain\n$dnslist_text
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# dnslists = black.list.example
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#
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# warn dnslists = black.list.example
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# add_header = X-Warning: $sender_host_address is in a black list at $dnslist_domain
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# log_message = found in $dnslist_domain
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# Client SMTP Authorization (csa) checks on the sending host.
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# Such checks do DNS lookups for special SRV records.
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# require verify = csa
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accept
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acl_check_data:
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# see av_scanner
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#deny malware = *
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# message = This message contains a virus ($malware_name).
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# Add headers to a message if it is judged to be spam. Before enabling this,
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# you must install SpamAssassin. You may also need to set the spamd_address
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# option above.
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#
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# warn spam = nobody
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# add_header = X-Spam_score: $spam_score\n\
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# X-Spam_score_int: $spam_score_int\n\
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# X-Spam_bar: $spam_bar\n\
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# X-Spam_report: $spam_report
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# feature HELO_REWRITE
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# XXX note that the public ip (162.219.5.183) resolves to viljetic.de
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warn
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sender_domains = viljetic.de : shackspace.de
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set acl_m_special_dom = $sender_address_domain
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accept
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begin routers
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# feature RETIOLUM_MAIL
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retiolum:
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debug_print = "R: retiolum for $local_part@$domain"
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driver = manualroute
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domains = ! ${retiolumHostname} : *.retiolum
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transport = retiolum_smtp
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route_list = ^.* $0 byname
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no_more
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internet_aliases:
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debug_print = "R: internet_aliases for $local_part@$domain"
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driver = redirect
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data = ''${lookup{$local_part@$domain}lsearch{${lsearch.internet-aliases}}}
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dnslookup:
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debug_print = "R: dnslookup for $local_part@$domain"
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driver = dnslookup
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domains = ! +local_domains
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transport = remote_smtp
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ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8
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# if ipv6-enabled then instead use:
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# ignore_target_hosts = <; 0.0.0.0 ; 127.0.0.0/8 ; ::1
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# (debian) same_domain_copy_routing = yes
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# (debian) ignore private rfc1918 and APIPA addresses
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# (debian) ignore_target_hosts = 0.0.0.0 : 127.0.0.0/8 : 192.168.0.0/16 :\
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# 172.16.0.0/12 : 10.0.0.0/8 : 169.254.0.0/16 :\
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# 255.255.255.255
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# Fail and bounce if the router does not find the domain in the DNS.
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# I.e. no more routers are tried.
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# There are a few cases where a dnslookup router will decline to accept an
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# address; if such a router is expected to handle "all remaining non-local
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# domains", then it is important to set no_more.
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no_more
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# XXX this is only used because these "well known aliases" goto tv@cd.retiolum
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# TODO bounce everything, there is no @cd.retiolum
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system_aliases:
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debug_print = "R: system_aliases for $local_part@$domain"
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driver = redirect
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data = ''${lookup{$local_part}lsearch{${lsearch.system-aliases}}}
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# TODO this is only b/c mv here... send mv's mails somewhere else...
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local_user:
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debug_print = "R: local_user for $local_part@$domain"
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driver = accept
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check_local_user
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# local_part_suffix = +* : -*
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# local_part_suffix_optional
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transport = home_maildir
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cannot_route_message = Unknown user
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begin transports
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retiolum_smtp:
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driver = smtp
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retry_include_ip_address = false
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# serialize_hosts = TODO-all-slow-hosts
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remote_smtp:
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driver = smtp
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# debian has also stuff for tls, headers_rewrite and more here
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# feature HELO_REWRITE
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# XXX note that the public ip (162.219.5.183) resolves to viljetic.de
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helo_data = ''${if eq{$acl_m_special_dom}{} \
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{$primary_hostname} \
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{$acl_m_special_dom} }
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home_maildir:
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driver = appendfile
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maildir_format
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maildir_use_size_file
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directory = $home/Mail
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directory_mode = 0700
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delivery_date_add
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envelope_to_add
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return_path_add
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begin retry
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*.retiolum * F,42d,1m
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* * F,2h,15m; G,16h,1h,1.5; F,4d,6h
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begin rewrite
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begin authenticators
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'';
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# group = mail
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# mode = 0660
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#address_pipe:
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# driver = pipe
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# return_output
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#
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#address_file:
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# driver = appendfile
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# delivery_date_add
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# envelope_to_add
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# return_path_add
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#
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#address_reply:
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# driver = autoreply
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#maildrop_pipe:
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# debug_print = "T: maildrop_pipe for $local_part@$domain"
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# driver = pipe
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# path = "/bin:/usr/bin:/usr/local/bin"
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# command = "/usr/bin/maildrop"
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# return_path_add
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# delivery_date_add
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# envelope_to_add
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##begin retry
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# Address or Domain Error Retries
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# Our host_redirect destinations might be offline a lot.
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# TODO define fallback destinations(?)
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#lsearch;${lsearch.internet-aliases} * F,42d,1m
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## begin rewrite
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# just in case (shackspace.de should already do this)
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#tv@shackspace.de tv@SHACK_REDIR_HOSTNAME T
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## begin authenticators
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#PLAIN:
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# driver = plaintext
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# server_set_id = $auth2
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# server_prompts = :
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# server_condition = Authentication is not yet configured
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# server_advertise_condition = ''${if def:tls_in_cipher }
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#LOGIN:
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# driver = plaintext
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# server_set_id = $auth1
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# server_prompts = <| Username: | Password:
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# server_condition = Authentication is not yet configured
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# server_advertise_condition = ''${if def:tls_in_cipher }
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};
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}
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# config = ''
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# primary_hostname = ${retiolumHostname}
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# domainlist local_domains = @ : localhost
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# domainlist relay_to_domains = *.retiolum
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# hostlist relay_from_hosts = <; 127.0.0.1 ; ::1
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#
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# acl_smtp_rcpt = acl_check_rcpt
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# acl_smtp_data = acl_check_data
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#
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# host_lookup = *
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# rfc1413_hosts = *
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# rfc1413_query_timeout = 5s
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#
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# log_file_path = syslog
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# syslog_timestamp = false
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# syslog_duplication = false
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#
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# begin acl
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#
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# acl_check_rcpt:
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# accept hosts = :
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# control = dkim_disable_verify
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#
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# deny message = Restricted characters in address
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# domains = +local_domains
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# local_parts = ^[.] : ^.*[@%!/|]
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#
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# deny message = Restricted characters in address
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# domains = !+local_domains
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# local_parts = ^[./|] : ^.*[@%!] : ^.*/\\.\\./
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#
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# accept local_parts = postmaster
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# domains = +local_domains
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#
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# #accept
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# # hosts = *.retiolum
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# # domains = *.retiolum
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# # control = dkim_disable_verify
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#
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# #require verify = sender
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#
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# accept hosts = +relay_from_hosts
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# control = submission
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# control = dkim_disable_verify
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#
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# accept authenticated = *
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# control = submission
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# control = dkim_disable_verify
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#
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# require message = relay not permitted
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# domains = +local_domains : +relay_to_domains
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#
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# require verify = recipient
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#
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# accept
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#
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#
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# acl_check_data:
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# accept
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#
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#
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# begin routers
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#
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# retiolum:
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# driver = manualroute
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# domains = ! ${retiolumHostname} : *.retiolum
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# transport = remote_smtp
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# route_list = ^.* $0 byname
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# no_more
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#
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# nonlocal:
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# debug_print = "R: nonlocal for $local_part@$domain"
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# driver = redirect
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# domains = ! +local_domains
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# allow_fail
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# data = :fail: Mailing to remote domains not supported
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# no_more
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#
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# local_user:
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# # debug_print = "R: local_user for $local_part@$domain"
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# driver = accept
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# check_local_user
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# # local_part_suffix = +* : -*
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# # local_part_suffix_optional
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# transport = home_maildir
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# cannot_route_message = Unknown user
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#
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#
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# begin transports
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#
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# remote_smtp:
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# driver = smtp
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#
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# home_maildir:
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# driver = appendfile
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# maildir_format
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# directory = $home/Maildir
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# directory_mode = 0700
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# delivery_date_add
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# envelope_to_add
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# return_path_add
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# # group = mail
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# # mode = 0660
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#
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# begin retry
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# *.retiolum * F,42d,1m
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# * * F,2h,15m; G,16h,1h,1.5; F,4d,6h
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#
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# begin rewrite
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#
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# begin authenticators
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# '';
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# };
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#}
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