Message could not be delivered

[Bounced mail]

The original message was received at Sat, 3 Feb 2007 21:47:01 +0900
from linux.cz [165.208.55.178]

----- The following addresses had permanent fatal errors -----
redhat-cz na linux.cz

----- Transcript of the session follows -----
... while talking to server 189.168.124.153:
>>> MAIL From:"Bounced mail" <postmaster na linux.cz>
<<< 503 "Bounced mail" <postmaster na linux.cz>... Refused