Subject: Returned mail: see transcript for details

From: Mail Delivery Subsystem <[email-masked]>
Date: Wed, 24 Sep 2008 06:20:37 +0400

The original message was received at Wed, 24 Sep 2008 06:20:33 +0400
from [116.254.165.59]

   ----- The following addresses had permanent fatal errors -----
<[email-masked]>
    (reason: User unknown)

   ----- Transcript of session follows -----
550 5.1.1 <[email-masked]>... User unknown