Outgoing SMTP Authentication - 2 Domains/SMTP-Server

Hello everybody,

I have a question regarding "Outgoing SMTP Authentication".

I'm planning to have two domains on my ZCS 6.0 GA, e.g. domainA.com & domainB.net.

To make sure that outgoing mail will be not recognized as spam, as far as I understand, one relay will not be enough, but I need one for every domain that is hosted on this server.

As I need to reference the MTA in the ZCS admin console on a server basis and NOT on a domain basis, this rather looks like a non-standard issue.

Has anybody got any experience with such a setup?

Thanks a lot in advance.

Cheers
mtk