diff --git a/applications/acme.nix b/applications/acme.nix
index f746182..3018c5a 100644
--- a/applications/acme.nix
+++ b/applications/acme.nix
@@ -1,11 +1,11 @@
-{ pkgs, lib, ... }:
+{ config, pkgs, lib, ... }:
   with lib;
   let
-    cfg = config.services.skynet_acme;
+    cfg = config.skynet_acme;
   in {
   imports = [];
 
-  options.services.skynet_acme = {
+  options.skynet_acme = {
     domains = lib.mkOption {
       default = [ ];
       type = lib.types.listOf lib.types.str;
diff --git a/applications/email.nix b/applications/email.nix
index 3f87dce..265fc45 100644
--- a/applications/email.nix
+++ b/applications/email.nix
@@ -98,7 +98,7 @@
     age.secrets.ldap_pw.file = ../secrets/ldap/pw.age;
 
     skynet_acme.domains = [
-      "mail.${cfg.domain.domain}"
+      "${cfg.sub}.${cfg.domain}"
     ];
 
     # set up dns record for it