diff --git a/modules/email/default.nix b/modules/email/default.nix
index 2b4a2fa..0cf2a5a 100644
--- a/modules/email/default.nix
+++ b/modules/email/default.nix
@@ -88,6 +88,9 @@ in
         session.rcpt = {
           directory = "'internal'";
         };
+        spam-filter = {
+          score.spam = "10.0";
+        };
       };
     };
   }