diff --git a/nixos/hosts/frankfurt-linode-01/firewall.nix b/nixos/hosts/frankfurt-linode-01/firewall.nix
index 1ad67aa9..e5caa589 100644
--- a/nixos/hosts/frankfurt-linode-01/firewall.nix
+++ b/nixos/hosts/frankfurt-linode-01/firewall.nix
@@ -98,20 +98,13 @@
 
       frontend mail 
         mode tcp
-        # bind :25
-        # bind :143
-        # bind :465
-        # bind :587
-        # bind :993
-        # bind :4190
-        
-        bind :::25 v4v6
-        bind :::143 v4v6
-        bind :::465 v4v6
-        bind :::587 v4v6
-        bind :::993 v4v6
-        bind :::4190 v4v6
-
+        bind :25
+        bind :143
+        bind :465
+        bind :587
+        bind :993
+        bind :4190
+       
       backend backend_mail
         mode tcp 
         server mailserver-wg 10.100.1.3