Ok... I've got a new domain in a mean to make it as email gateway (a.k.a. all other domains' emails get delivered to domainA).

So I have got domainA set up as primary domain in Google Apps. Added domainB as domain alias.

I have set up a user and got the domainB MX set up and was working great. Then it's later when I want to add domainC and set up email alias to go with only domainC... BUT Google Apps lack such ability.

Currently, with MS Exchange 2003 I have running at home, I can have a mailbox with nameA@domainA, or nameB@domainA, or nameA@domainC etc etc... basically mix match email aliases with different domain aliases.

Unless I missed something... but how do I go about replicating that similar set up I have in MS Exchange 2003 (which running perfectly fine) on Google Apps?!