postfix one e-mail restrictions

[Michal Novotny <debian@prolidi.cz>]

Hello All!

I  have a little question. How can I setup Postfix for only one domain
e-mails (ex. name1@test.com, name2@test.com) can send and receive mail
only from/to one e-mail address (ex. list@test.net) ? This means, they
cannot  use  this  e-mail for any other e-mail addresses. And if it is
posible include it in normal Postfix setup for other domains, or if it
must have separate mail server?

Thanks for any help with this.

Regards
Michal Novotny
http://prolidi.cz