I seen where this solution may work but I recieve an 550 error:
The ACL in question is:
deny domains = +local_domains
!hosts = IP1 : IP2
!authenticated = *
Im in a similar situation but running 11.32.3
I have a barracuda box in front of the cpanel server, however I dont want someone bypassing my barracuda to send people hosted locally on the cpanel server spam email.
Where is the check_recipient portion under 11.32? Or does anyone have any suggestions?