diff --git a/filters/postfix-postscreen.preg b/filters/postfix-postscreen.preg
index 5157f65..5998470 100644
--- a/filters/postfix-postscreen.preg
+++ b/filters/postfix-postscreen.preg
@@ -2,4 +2,5 @@
 PREGREET [[:digit:]]+ after [[:digit:]]+ from \[<HOST>\]:[[:digit:]]+
 BARE NEWLINE from \[<HOST>\]:[[:digit:]]+
 COMMAND PIPELINING from \[<HOST>\]:[[:digit:]]+
+NON-SMTP COMMAND from \[<HOST>\]:[[:digit:]]+ after CONNECT
 HANGUP after [0-9\.]+ from \[<HOST>\]:[[:digit:]]+ in tests before SMTP handshake