[Netfilter] Further improvements to catch invalid input

data/Dockerfiles/netfilter/server.py

@@ -301,8 +301,8 @@ def watch():
   pubsub.subscribe('F2B_CHANNEL')
 
   while not quit_now:
-    try:
       for item in pubsub.listen():
+        try:
           refreshF2bregex()
           for rule_id, rule_regex in f2bregex.items():
             if item['data'] and item['type'] == 'message':
@@ -319,6 +319,7 @@ def watch():
                 ban(addr)
         except Exception as ex:
           logWarn('Could not read logline from pubsub, skipping...')
+          continue
 
 def snat4(snat_target):
   global lock

docker-compose.yml

@@ -390,7 +390,7 @@ services:
             - acme
 
     netfilter-mailcow:
-      image: mailcow/netfilter:1.40
+      image: mailcow/netfilter:1.41
       stop_grace_period: 30s
       depends_on:
         - dovecot-mailcow