diff --git a/lass/2configs/retiolum.nix b/lass/2configs/retiolum.nix
index 7a7bf95be..647327de5 100644
--- a/lass/2configs/retiolum.nix
+++ b/lass/2configs/retiolum.nix
@@ -5,7 +5,6 @@
   krebs.iptables = {
     tables = {
       filter.INPUT.rules = [
-        { predicate = "-p tcp --dport smtp"; target = "ACCEPT"; }
         { predicate = "-p tcp --dport tinc"; target = "ACCEPT"; }
         { predicate = "-p udp --dport tinc"; target = "ACCEPT"; }
       ];