Subject: Returned mail: see transcript for details

From: Mail Delivery Subsystem <[email-masked]>
Date: Wed, 24 Sep 2008 17:29:51 +0300 (EEST)

The original message was received at Wed, 24 Sep 2008 17:29:49 +0300 (EEST)
from [58.245.197.52]

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

   ----- Transcript of session follows -----
procmail: Unknown user "cw"
550 5.1.1 <[email-masked]>... User unknown