preisi/mailnix
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add configuration option to alias entire domains and respective tests

Browse source
This commit is contained in:
Thomas Preisner 2024-12-28 00:40:32 +01:00
parent 92d0a6e1f8
commit 5f49caec49
3 changed files with 71 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

16
mailsystem/default.nix
View file

@ -127,6 +127,22 @@ in {
default = {};
};
virtualDomainAliases = lib.mkOption {
type = with lib.types; attrsOf str;
example = {
"aliasdomain.com" = "domain.com";
};
description = ''
Virtual aliasing of domains. A virtual alias `"aliasdomain.com" = "domain.com"`
means that all mail directed at `@aliasdomain.com` are forwarded to `@domain.com`.
This also entails, that any account or alias of `domain.com` is partially valid
for `aliasdomain.com`. For example, `user@domain.com` can receive mails at
`user@aliasdomain.com`. However, if `user@domain.com` shall be able to dispatch
mails using `user@aliasdomain.com`, an explicit alias needs to be configured.
'';
default = {};
};
extraVirtualAliases = lib.mkOption {
type = let
account = lib.mkOptionType {

20
mailsystem/postfix.nix
View file

@ -28,9 +28,18 @@ with (import ./common.nix {inherit config;}); let
map (from: {"${from}" = to;}) (value.aliases ++ lib.singleton name))
cfg.accounts));
virtual_domain_aliases = let
alias_domains =
lib.concatMapAttrs (src: dst: {
"@${src}" = "@${dst}";
})
cfg.virtualDomainAliases;
in
attrsToLookupTable alias_domains;
extra_virtual_aliases = attrsToLookupTable cfg.extraVirtualAliases;
all_virtual_aliases = mergeLookupTables [account_virtual_aliases extra_virtual_aliases];
all_virtual_aliases = mergeLookupTables [account_virtual_aliases virtual_domain_aliases extra_virtual_aliases];
aliases_file = let
content = lookupTableToString all_virtual_aliases;
@ -65,6 +74,15 @@ with (import ./common.nix {inherit config;}); let
tls_exclude_ciphers = "MD5, DES, ADH, RC4, PSD, SRP, 3DES, eNULL, aNULL";
in {
config = lib.mkIf cfg.enable {
assertions =
lib.mapAttrsToList (
src: dst: {
assertion = (builtins.elem src cfg.domains) && (builtins.elem dst cfg.domains);
message = "Both aliased domain (${src}) and actual domain (${dst}) need to be managed by the mailserver.";
}
)
cfg.virtualDomainAliases;
services.postfix = {
enable = true;
hostname = "${cfg.reverseFqdn}";