Subject: [Gary] Returned mail: see transcript for details

From: Mail Delivery Subsystem <[email-masked]>
Date: Fri, 21 May 2010 14:16:49 +0400 (MSD)

The original message was received at Fri, 21 May 2010 14:16:43 +0400 (MSD)
from 118-167-57-91.dynamic.hinet.net [118.167.57.91]

   ----- The following addresses had permanent fatal errors -----
<[email-masked]>
    (reason: 550 5.1.1 <[email-masked]>... User unknown)
<[email-masked]>
    (reason: 550 5.1.1 <[email-masked]>... User unknown)
<[email-masked]>
    (reason: 550 5.1.1 <[email-masked]>... User unknown)
<[email-masked]>
    (reason: 550 5.1.1 <[email-masked]>... User unknown)
<[email-masked]>
    (reason: 550 5.1.1 <[email-masked]>... User unknown)
<[email-masked]>
    (reason: 550 5.1.1 <[email-masked]>... User unknown)
<[email-masked]>
    (reason: 550 5.1.1 <[email-masked]>... User unknown)
<[email-masked]>
    (reason: 550 5.1.1 <[email-masked]>... User unknown)
<[email-masked]>
    (reason: 550 5.1.1 <[email-masked]>... User unknown)
<[email-masked]>
    (reason: 550 5.1.1 <[email-masked]>... User unknown)

   ----- Transcript of session follows -----
... while talking to comp.chem.msu.su.:
>>> DATA
<<< 550 5.1.1 <[email-masked]>... User unknown
550 5.1.1 <[email-masked]>... User unknown
<<< 550 5.1.1 <[email-masked]>... User unknown
550 5.1.1 <[email-masked]>... User unknown
<<< 550 5.1.1 <[email-masked]>... User unknown
550 5.1.1 <[email-masked]>... User unknown
<<< 550 5.1.1 <[email-masked]>... User unknown
550 5.1.1 <[email-masked]>... User unknown
<<< 550 5.1.1 <[email-masked]>... User unknown
550 5.1.1 <[email-masked]>... User unknown
<<< 550 5.1.1 <[email-masked]>... User unknown
550 5.1.1 <[email-masked]>... User unknown
<<< 550 5.1.1 <[email-masked]>... User unknown
550 5.1.1 <[email-masked]>... User unknown
<<< 550 5.1.1 <[email-masked]>... User unknown
550 5.1.1 <[email-masked]>... User unknown
<<< 550 5.1.1 <[email-masked]>... User unknown
550 5.1.1 <[email-masked]>... User unknown
<<< 550 5.1.1 <[email-masked]>... User unknown
550 5.1.1 <[email-masked]>... User unknown
<<< 503 5.0.0 Need RCPT (recipient)