The original message was received at Sun, 5 Feb 2012 08:21:29 +0300 (MSK) from static-mum-120.63.242.168.mtnl.net.in [120.63.242.168] ----- The following addresses had permanent fatal errors ----- <[email protected]> (reason: 550 Address not known at this site.) ----- Transcript of session follows ----- ... while talking to pro.soc.pu.ru.:

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RCPT To:<[email protected]> <<< 550 Address not known at this site. 550 5.1.1 <[email protected]>... User unknown