Postfix - <pokus na czechwireless.net>: mail for czechwireless.net loops back to myself

[David Michal]

Zdravim,
Snazim se pridat domenu czechwireless.net do sveho postfixu.

V main.cf mam: 
mydestination = $myhostname, $mydomain, czechwireless.net

A po odeslani pokusne zpravy jsem obdrzel hlasku viz %subj.

MX zaznam pro domenu czechwireless.net mam nastaven na prague.czechwireless.cz 

Poradite nekdo?
Diky,
David Michal