diff --git a/depot/services/mail/default.nix b/depot/services/mail/default.nix
index b0a22be1..a7835367 100644
--- a/depot/services/mail/default.nix
+++ b/depot/services/mail/default.nix
@@ -14,7 +14,7 @@ with lib;
     domain = "@";
     mx = {
       priority = 10;
-      target = config.network.addresses.public.domain;
+      target = "${config.network.addresses.public.domain}.";
     };
   };