I have the same issue with version 2.5.1. Ran 'efw-upgrade' but there is No interesting upgrades available, have yet to try 'efw-upgrade -s' though.
I also wonder is entry on 'Whitelist Sender' & 'Spam Whitelist Sender' always bypass RBLs. What about 'Blacklist Sender' & 'Spam Blacklist Sender', are they being inspected first or after RBLs and then spam filter?
Hope there is a SMTP proxy flowchat out there somewhere
Sincerely,