The original message was received at Tue, 9 Jan 2007 10:52:49 +0100 from 40.63.212.125 ----- The following addresses had permanent fatal errors ----- redhat-cz na linux.cz ----- Transcript of the session follows ----- ... while talking to host 184.201.130.104: >>> MAIL From:"MAILER-DAEMON" <noreply na linux.cz> <<< 508 Address unknown