Subject: Mail delivery failed: returning message to sender

From: Mail Delivery System <[email-masked]>
Date: Tue, 23 Sep 2008 06:01:42 +0400

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]
    mailbox is full: retry timeout exceeded

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

From: =?koi8-r?B?zs/X2cog0M/EyM/E?= <[email-masked]>
To: <[email-masked]>
Subject: =?koi8-r?B?9d7F1CDQ0sXE09TB18nUxczY08vJyCDSwdPIz8TP1w==?=
Date: Tue, 23 Sep 2008 10:01:31 +0800