The original message was received at Fri, 19 Jan 2007 09:30:14 +0100 from [190.255.152.168] ----- The following addresses had permanent fatal errors ----- sendmail na linux.cz ----- Transcript of session follows ----- ... while talking to server linux.cz.: 550 5.1.2 <sendmail na linux.cz>... Host unknown (Name server: host not found)