Updated 'murmur' filter to use new double-anchored regex based on @yarikoptic's suggestions.

config/filter.d/murmur.conf

@@ -10,8 +10,15 @@ before = common.conf
 
 _daemon = murmurd
 
-failregex = Rejected connection from <HOST>:\d+: Invalid server password$
+# N.B. If you allow users to have usernames that include the '>' character you
-            Rejected connection from <HOST>:\d+: Wrong certificate or password for existing user$
+#      should change this to match the regex assigned to the 'username'
+#      variable in your server config file (murmur.ini / mumble-server.ini).
+_usernameregex = [^>]+
+
+_prefix = <W>[\n\s]*(\.\d{3})?\s+\d+ => <\d+:%(_usernameregex)s\(-1\)> Rejected connection from <HOST>:\d+:
+
+failregex = ^%(_prefix)s Invalid server password$
+            ^%(_prefix)s Wrong certificate or password for existing user$
 
 ignoreregex =