backup: got it working for email + some improvements

applications/email.nix

@@ -16,13 +16,6 @@
     ./dns.nix
   ];
 
-  /*
-  backups = [
-    "/var/vmail"
-    "/var/dkim"
-  ];
-  */
-
   options.services.skynet_email = {
     # options that need to be passed in to make this work
 
@@ -94,6 +87,13 @@
   };
 
   config = mkIf cfg.enable {
+    services.skynet_backup = {
+      normal.backups = [
+        "/var/vmail"
+        "/var/dkim"
+      ];
+      host = { ip = cfg.host.ip; name = cfg.host.name; };
+    };
 
     age.secrets.ldap_pw.file = ../secrets/ldap/pw.age;