email problem!

Is possible to associate an email address to a third level domain? eg. for www.abc.com and any kind of sub.abc.com there's no problem for email[at]abc.com ....but is possible to have an email[at]sub.abc.com ?

yes, just add the E-mail address in the Panel > Mail > Manage addresses area. You can select any domain or sub-domain you already have hosted here.

-Matttail