diff --git a/bundles/postfix/metadata.py b/bundles/postfix/metadata.py
index 4dfb113..f5850b0 100644
--- a/bundles/postfix/metadata.py
+++ b/bundles/postfix/metadata.py
@@ -73,6 +73,7 @@ def letsencrypt(metadata):
 @metadata_reactor.provides(
     'iptables/port_rules/25',
     'iptables/port_rules/587',
+    'iptables/port_rules/2525',
 )
 def iptables(metadata):
     if node.has_bundle('postfixadmin'):