diff --git a/data/Dockerfiles/netfilter/server.py b/data/Dockerfiles/netfilter/server.py
index f43122ea..910679c6 100644
--- a/data/Dockerfiles/netfilter/server.py
+++ b/data/Dockerfiles/netfilter/server.py
@@ -31,7 +31,8 @@ RULES[2] = '-login: Disconnected \(auth failed, .+\): user=.*, method=.+, rip=([
 RULES[3] = '-login: Aborted login \(tried to use disallowed .+\): user=.+, rip=([0-9a-f\.:]+), lip.+'
 RULES[4] = 'SOGo.+ Login from \'([0-9a-f\.:]+)\' for user .+ might not have worked'
 RULES[5] = 'mailcow UI: Invalid password for .+ by ([0-9a-f\.:]+)'
-#RULES[6] = '-login: Aborted login \(no auth .+\): user=.+, rip=([0-9a-f\.:]+), lip.+'
+RULES[6] = '([0-9a-f\.:]+) \"GET \/SOGo\/.* HTTP.+\" 403 .+'
+#RULES[7] = '-login: Aborted login \(no auth .+\): user=.+, rip=([0-9a-f\.:]+), lip.+'
 
 bans = {}
 log = {}
diff --git a/docker-compose.yml b/docker-compose.yml
index efee7ade..46317570 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -333,7 +333,7 @@ services:
             - acme
 
     netfilter-mailcow:
-      image: mailcow/netfilter:1.22
+      image: mailcow/netfilter:1.23
       build: ./data/Dockerfiles/netfilter
       stop_grace_period: 30s
       depends_on: