Except we were trying to reconfigure an existing scanner (where Inbound and Outbound are using the same IP, not a recommedned setup, but it actually works)
So we added a Virtual IP, and set Outbound to use the new Virtual IP (and changed Advanced Settings - Delivery Tab - SMTP Delivery Bindings Non-Local Messages and Dynamically Routed Messages to use the Virtual IP as well)
We the immediately get "All recipients are invalid, Rejected message for a nonlocal recipient " for all outgoing mail.
We have a second scanner that has 2 physical NICS, that works just fine using two IP's, one Inbound, one Outbound. Obviously we have compared settings.
Both scanners and the Control Center (separate) are 9.5.1-6
Thanks,
Karl