Strange Mail Problem (2/2)(mail-alias)

[sockenhans]

Hello together

Ive got a big Problem with a mail alias.
Suse 9.3 Plesk 8.0 psa-qmail


We ve got the domain mydomain.com
There are some post boxes:

[email protected]
[email protected]

There are aliases like
mydomain.de
mydomain.net
mydomain.org

normally the mail like [email protected]/net/org
should put to [email protected]

But it dont work.

NOTICE: The alias is switch on for Web AND Mail in the
Plesk configuration.

but nothing happens.
Any ideas ????
Thx