hosts/thrall/default.nix

@@ -324,6 +324,13 @@ in {
     maxretry = 5;
     ignoreIP =
       [ "127.0.0.0/8" "195.90.211.228/22" "10.0.0.0/8" "192.168.0.0/16" ];
+
+    jails.postfix = ''
+      filter   = postfix
+      maxretry = 3
+      action   = iptables[name=postfix, port=smtp, protocol=tcp]
+      enabled  = true
+    '';
   };
 
   services.syncthing = {