From 83d5b44462722c5571b33eb6bcb0491af90cccc7 Mon Sep 17 00:00:00 2001
From: Michael Dopheide <dopheide@es.net>
Date: Wed, 24 Mar 2021 15:48:09 -0500
Subject: [PATCH] Sometimes user_agent is missing

---
 scripts/policy/protocols/smtp/software.zeek | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/policy/protocols/smtp/software.zeek b/scripts/policy/protocols/smtp/software.zeek
index 69cfdf4c57..342beedae0 100644
--- a/scripts/policy/protocols/smtp/software.zeek
+++ b/scripts/policy/protocols/smtp/software.zeek
@@ -48,7 +48,7 @@ export {
 
 event mime_one_header(c: connection, h: mime_header_rec) &priority=4
 	{
-	if ( ! c?$smtp ) return;
+	if ( ! c?$smtp || ! c$smtp?$user_agent ) return;
 	if ( h$name == "USER-AGENT" && webmail_user_agents in c$smtp$user_agent )
 		c$smtp$is_webmail = T;
 	}