diff --git a/default.nix b/default.nix
index d5513f6..4fe7778 100644
--- a/default.nix
+++ b/default.nix
@@ -61,8 +61,9 @@ in
           };
 
           aliases = mkOption {
-            type = types.listOf types.str;
+            type = with types; listOf types.str;
             example = ["abuse@example.com" "postmaster@example.com"];
+            default = [];
             description = ''
               A list of aliases of this login account.
             '';
diff --git a/mail-server/postfix.nix b/mail-server/postfix.nix
index a2ec9ef..22d445e 100644
--- a/mail-server/postfix.nix
+++ b/mail-server/postfix.nix
@@ -23,12 +23,20 @@ let
   cfg = config.mailserver;
 
   # valiases_postfix :: [ String ]
-  valiases_postfix = map
+  valiases_postfix = lib.flatten (lib.mapAttrsToList
+    (name: value:
+      let to = name;
+          in map (from: "${from} ${to}") value.aliases)
+    cfg.loginAccounts);
+
+  # extra_valiases_postfix :: [ String ]
+  extra_valiases_postfix = map
     (from:
       let to = cfg.virtualAliases.${from};
       in "${from} ${to}")
     (builtins.attrNames cfg.virtualAliases);
 
+
   # accountToIdentity :: User -> String
   accountToIdentity = account: "${account.name} ${account.name}";
 
@@ -36,7 +44,7 @@ let
   vaccounts_identity = map accountToIdentity (lib.attrValues cfg.loginAccounts);
 
   # valiases_file :: Path
-  valiases_file = builtins.toFile "valias" (lib.concatStringsSep "\n" valiases_postfix);
+  valiases_file = builtins.toFile "valias" (lib.concatStringsSep "\n" extra_valiases_postfix);
 
   # vhosts_file :: Path
   vhosts_file = builtins.toFile "vhosts" (concatStringsSep "\n" cfg.domains);
@@ -47,7 +55,8 @@ let
   # for details on how this file looks. By using the same file as valiases,
   # every alias is owned (uniquely) by its user. We have to add the users own
   # address though
-  vaccounts_file = builtins.toFile "vaccounts" (lib.concatStringsSep "\n" (vaccounts_identity ++ valiases_postfix));
+  vaccounts_file = builtins.toFile "vaccounts" (lib.concatStringsSep "\n"
+  (vaccounts_identity ++ extra_valiases_postfix));
 
   submissionHeaderCleanupRules = pkgs.writeText "submission_header_cleanup_rules" ''
      # Removes sensitive headers from mails handed in via the submission port.