SMG 10.6, virtual addresses used by the stream coming out

SMG 10.6, virtual addresses used by the stream coming out

I'm working on a POC for a next implementation. A single network card and 3 (2 virtuals) IP addresses. I would like to associate an IP address for an outgoing domain and another IP address for another domain.

I've tried many combinations in Administration/hosts/configuration/SMTP and Administration/hosts/configuration/SMTP/settings advanced, without conclusive results.

Last configuration tested:

IP address of the incoming mail: IP1

IP address of outgoing mail: IP2

Distribution SMTP links: Auto

Non-local distribution SMTP binding by domain:

Domain1: IP 2

Domain 2: IP2

The configuration works with Domain1 but not Domain2 (the message remains in the queue).