stockholm/krebs/3modules/exim-retiolum.nix

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{ config, pkgs, lib, ... }:
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with import <stockholm/lib>;
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let
cfg = config.krebs.exim-retiolum;
out = {
options.krebs.exim-retiolum = api;
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config = lib.mkIf cfg.enable imp;
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};
api = {
enable = mkEnableOption "krebs.exim-retiolum";
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local_domains = mkOption {
type = with types; listOf hostname;
default = ["localhost"] ++ config.krebs.build.host.nets.retiolum.aliases;
};
primary_hostname = mkOption {
type = types.str;
default = let x = "${config.krebs.build.host.name}.r"; in
assert elem x config.krebs.build.host.nets.retiolum.aliases;
x;
};
relay_to_domains = mkOption {
# TODO hostname with wildcards
type = with types; listOf str;
default = [
"*.r"
];
};
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};
imp = {
krebs.exim = {
enable = true;
config =
# This configuration makes only sense for retiolum-enabled hosts.
# TODO modular configuration
assert config.krebs.tinc.retiolum.enable;
''
keep_environment =
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primary_hostname = ${cfg.primary_hostname}
domainlist local_domains = ${concatStringsSep ":" cfg.local_domains}
domainlist relay_to_domains = ${concatStringsSep ":" cfg.relay_to_domains}
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acl_smtp_rcpt = acl_check_rcpt
acl_smtp_data = acl_check_data
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host_lookup = *
rfc1413_hosts = *
rfc1413_query_timeout = 5s
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log_file_path = syslog
syslog_timestamp = false
syslog_duplication = false
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tls_advertise_hosts =
begin acl
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acl_check_rcpt:
deny
local_parts = ^[./|] : ^.*[@%!] : ^.*/\\.\\./
message = restricted characters in address
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accept
domains = +local_domains : +relay_to_domains
deny
message = relay not permitted
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acl_check_data:
accept
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begin routers
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local:
driver = accept
domains = +local_domains
check_local_user
# local_part_suffix = +*
# local_part_suffix_optional
transport = home_maildir
remote:
driver = manualroute
domains = +relay_to_domains
transport = remote_smtp
route_list = ^.* $0 byname
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begin transports
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remote_smtp:
driver = smtp
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home_maildir:
driver = appendfile
maildir_format
directory = $home/Maildir
directory_mode = 0700
delivery_date_add
envelope_to_add
return_path_add
# group = mail
# mode = 0660
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begin retry
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${concatMapStringsSep "\n" (k: "${k} * F,42d,1m") cfg.relay_to_domains}
* * 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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in out