I can't receive email in added domain!!

[Spavi Amiatanet]

Hi, I've a problem.
I've installed qmail, qmailadmin, vpopmail, ezmlm, sqwebmail and I can send
and receive email to/from the account of primary domain. If I add a new
domain with vadddomain, i can add users, mailinglists, etc. but I can't
receive email!!
Someone can say to me why?

Thanks
Spavi