The original message was received at Sun, 9 Apr 2006 19:32:34 +0400 from 149.213.134.50 ----- The following addresses had permanent fatal errors ----- <databases na linux.cz> ----- Transcript of the session follows ----- ... while talking to linux.cz.: 550 5.1.2 <databases na linux.cz>... Host unknown (Name server: host not found)