nixos/modules/services/mail/postfix.nix

   1 { pkgs, lib, config, ... }:
   2 let inherit (lib) types;
   3     inherit (pkgs.lib) unlinesAttrs unwords;
   4     inherit (config) networking;
   5     inherit (config.services) postfix;
   6 in
   7 {
   8 options.services.postfix = {
   9   aliases = lib.mkOption {
  10     type = with types; attrsOf (listOf str);
  11     default = {};
  12     example = { "root@${networking.domain}" = [
  13                   "user1@${networking.domain}"
  14                   "user2@${networking.domain}"
  15                 ];
  16                 "@example.coop" = ["user1@${networking.domain}"];
  17               };
  18   };
  19 };
  20 config = lib.mkIf postfix.enable {
  21   services.postfix = {
  22     mapFiles."virtual_alias_maps" = pkgs.writeText "virtual_alias_maps"
  23       (unlinesAttrs
  24        (from: to: "${from} ${unwords to}")
  25        postfix.aliases);
  26     config = {
  27       virtual_alias_maps = [
  28         "hash:/etc/postfix/virtual_alias_maps"
  29       ];
  30     };
  31   };
  32 };
  33 }