The original message was received at Thu, 1 Mar 2007 17:03:01 +0200 from linux.cz [100.223.245.129] ----- The following addresses had permanent fatal errors ----- <redhat-cz na linux.cz> ----- Transcript of session follows ----- ... while talking to mail server 223.109.162.37: >>> RCPT To:<redhat-cz na linux.cz> <<< 550 MAILBOX NOT FOUND