143 lines
3.5 KiB
Nix
143 lines
3.5 KiB
Nix
{ config, pkgs, lib, ... }:
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with builtins;
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with lib;
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let
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cfg = config.krebs.exim-retiolum;
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out = {
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options.krebs.exim-retiolum = api;
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config =
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# This configuration makes only sense for retiolum-enabled hosts.
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# TODO modular configuration
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assert config.krebs.retiolum.enable;
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mkIf cfg.enable imp;
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};
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api = {
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enable = mkEnableOption "krebs.exim-retiolum";
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};
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imp = {
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services.exim = {
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enable = true;
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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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acl_smtp_rcpt = acl_check_rcpt
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acl_smtp_data = acl_check_data
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host_lookup = *
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rfc1413_hosts = *
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rfc1413_query_timeout = 5s
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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 hosts = :
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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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#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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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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require message = relay not permitted
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domains = +local_domains : +relay_to_domains
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require verify = recipient
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accept
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acl_check_data:
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accept
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begin routers
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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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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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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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remote_smtp:
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driver = smtp
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home_maildir:
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driver = appendfile
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maildir_format
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directory = $home/Maildir
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directory_mode = 0700
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delivery_date_add
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envelope_to_add
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return_path_add
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# group = mail
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# mode = 0660
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begin retry
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*.retiolum * F,42d,1m
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* * F,2h,15m; G,16h,1h,1.5; F,4d,6h
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begin rewrite
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begin authenticators
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'';
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};
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};
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# TODO get the hostname from somewhere else.
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retiolumHostname = "${config.networking.hostName}.retiolum";
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in
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out
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