Subject: Mail delivery failed: returning message to sender

From: Mail Delivery System <[email-masked]>
Date: Wed, 20 Aug 2008 14:00:04 -0700

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  [email-masked]
    (generated from [email-masked])
    SMTP error from remote mail server after end of data:
    host mxs.mail.ru [194.67.23.20]: 550 Message was not accepted -- invalid mailbox.  Local mailbox [email-masked] is unavailable:
    user not found

------ This is a copy of the message's headers. ------

From: =?koi8-r?B?7cHL08nN?= <[email-masked]>
To: <[email-masked]>
Subject: =?koi8-r?B?78PFzsvBIMnO1MXMzMXL1NXBzNjOz8og08/C09TXxc7Oz9PUyS4=?=
Date: Thu, 21 Aug 2008 05:00:00 +0800