diff --git a/lass/1systems/dishfire/config.nix b/lass/1systems/dishfire/config.nix
index 416edeb82..25e8759b1 100644
--- a/lass/1systems/dishfire/config.nix
+++ b/lass/1systems/dishfire/config.nix
@@ -88,6 +88,7 @@
       };
       krebs.iptables.tables.filter.INPUT.rules = [
         { predicate = "-p tcp --dport smtp"; target = "ACCEPT"; }
+        { predicate = "-p tcp --dport 993"; target = "ACCEPT"; }
       ];
     }
   ];