E-Mail Setting for ServerAlias?

Hey.

I have a account with more ServerAlias like:

ServerAlias *.domain.com
ServerAlias *.domain.net domain.net
ServerAlias *.domainB.info domainB.info

All domains are only alternate names or alternate TLD. All domains point to the same site. Now I want create a e-mail address for domainB.info, but thats not possible in this account?

Actual is admin@domain.com, but I need peter@domainB.info too. Is this possible, without a new account?