Skynet/misc_nixos-mailserver
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Add forwards option

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This option allow to forward mails to external addresses.
This commit is contained in:
Antoine Eiche 2020-09-28 20:50:45 +02:00
parent 5cd6f8e7b3
commit 24600377af
2 changed files with 30 additions and 10 deletions
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18
default.nix
View file

@ -218,6 +218,24 @@ in
default = {};
};
forwards = mkOption {
type = with types; attrsOf (either (listOf str) str);
default = {};
example = {
"user@example.com" = "user@elsewhere.com";
};
description = ''
To forward mails to an external address. For instance,
the value {`"user@example.com" = "user@elsewhere.com";}`
means that mails to `user@example.com` are forwarded to
`user@elsewhere.com`. The difference with the
`extraVirtualAliases` option is that `user@elsewhere.com`
can't send mail as `user@example.com`. Also, this option
allows to forward mails to external addresses.
'';
default = {};
};
rejectSender = mkOption {
type = types.listOf types.str;
example = [ "@example.com" "spammer@example.net" ];

22
mail-server/postfix.nix
View file

@ -37,15 +37,7 @@ let
cfg.loginAccounts);
# extra_valiases_postfix :: [ String ]
extra_valiases_postfix =
(map
(from:
let to = cfg.extraVirtualAliases.${from};
aliasList = (l: let aliasStr = builtins.foldl' (x: y: x + y + ", ") "" l;
in builtins.substring 0 (builtins.stringLength aliasStr - 2) aliasStr);
in if (builtins.isList to) then "${from} " + (aliasList to)
else "${from} ${to}")
(builtins.attrNames cfg.extraVirtualAliases));
extra_valiases_postfix = attrsToAliasList cfg.extraVirtualAliases;
# all_valiases_postfix :: [ String ]
all_valiases_postfix = valiases_postfix ++ extra_valiases_postfix;
@ -56,6 +48,16 @@ let
(lib.filter (acct: acct.sendOnly) (lib.attrValues cfg.loginAccounts)));
denied_recipients_file = builtins.toFile "denied_recipients" (lib.concatStringsSep "\n" denied_recipients_postfix);
# attrsToAliasList :: Map String (Either String [ String ]) -> [ String ]
attrsToAliasList = aliases:
let
toList = to: if builtins.isList to then to else [to];
in lib.mapAttrsToList
(from: to: "${from} " + (lib.concatStringsSep ", " (toList to)))
aliases;
# forwards :: [ String ]
forwards = attrsToAliasList cfg.forwards;
# valiases_file :: Path
valiases_file = builtins.toFile "valias"
@ -136,7 +138,7 @@ in
sslKey = keyPath;
enableSubmission = true;
virtual =
(lib.concatStringsSep "\n" (all_valiases_postfix ++ catchAllPostfix));
(lib.concatStringsSep "\n" (all_valiases_postfix ++ catchAllPostfix ++ forwards));
config = {
# Extra Config