[Netfilter] Add non-SMTP command rule (#4289)

data/Dockerfiles/netfilter/server.py

@@ -92,15 +92,16 @@ def refreshF2bregex():
   global exit_code
   if not r.get('F2B_REGEX'):
     f2bregex = {}
-    f2bregex[1] = 'warning: .*\[([0-9a-f\.:]+)\]: SASL .+ authentication failed'
-    f2bregex[2] = '-login: Disconnected \(auth failed, .+\): user=.*, method=.+, rip=([0-9a-f\.:]+),'
-    f2bregex[3] = '-login: Aborted login \(tried to use disallowed .+\): user=.+, rip=([0-9a-f\.:]+), lip.+'
-    f2bregex[4] = 'SOGo.+ Login from \'([0-9a-f\.:]+)\' for user .+ might not have worked'
-    f2bregex[5] = 'mailcow UI: Invalid password for .+ by ([0-9a-f\.:]+)'
-    f2bregex[6] = '([0-9a-f\.:]+) \"GET \/SOGo\/.* HTTP.+\" 403 .+'
-    f2bregex[7] = 'Rspamd UI: Invalid password by ([0-9a-f\.:]+)'
-    f2bregex[8] = '-login: Aborted login \(auth failed .+\): user=.+, rip=([0-9a-f\.:]+), lip.+'
-    f2bregex[9] = 'NOQUEUE: reject: RCPT from \[([0-9a-f\.:]+)].+Protocol error.+'
+    f2bregex[1] = 'mailcow UI: Invalid password for .+ by ([0-9a-f\.:]+)'
+    f2bregex[2] = 'Rspamd UI: Invalid password by ([0-9a-f\.:]+)'
+    f2bregex[3] = 'warning: .*\[([0-9a-f\.:]+)\]: SASL .+ authentication failed'
+    f2bregex[4] = 'warning: non-SMTP command from .*\[([0-9a-f\.:]+)]:.+'
+    f2bregex[5] = 'NOQUEUE: reject: RCPT from \[([0-9a-f\.:]+)].+Protocol error.+'
+    f2bregex[6] = '-login: Disconnected \(auth failed, .+\): user=.*, method=.+, rip=([0-9a-f\.:]+),'
+    f2bregex[7] = '-login: Aborted login \(auth failed .+\): user=.+, rip=([0-9a-f\.:]+), lip.+'
+    f2bregex[8] = '-login: Aborted login \(tried to use disallowed .+\): user=.+, rip=([0-9a-f\.:]+), lip.+'
+    f2bregex[9] = 'SOGo.+ Login from \'([0-9a-f\.:]+)\' for user .+ might not have worked'
+    f2bregex[10] = '([0-9a-f\.:]+) \"GET \/SOGo\/.* HTTP.+\" 403 .+'
     r.set('F2B_REGEX', json.dumps(f2bregex, ensure_ascii=False))
   else:
     try: