The original message was received at Wed, 3 Jan 2007 12:11:29 +0100 from linux.cz [104.40.216.62] ----- The following addresses had permanent fatal errors ----- sendmail na linux.cz ----- Transcript of the session follows ----- ... while talking to 2.95.161.96: 550 5.1.2 <sendmail na linux.cz>... Host unknown (Name server: host not found)