[Apakabar] Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the Postfix program at host shiba.shonai.co.jp.

I'm sorry to have to inform you that the message returned
below could not be delivered to one or more destinations.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the message returned below.

			The Postfix program

<t172-00 at shonai.co.jp>: host 10.21.10.100[10.21.10.100] said: 550 unknown user
    <t172-00 at shonai.co.jp> (in reply to RCPT TO command)
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From: "karlis omero" <apakabar at polarhome.com>
Subject: We caught you naked in shower t172-00
Date: Fri, 16 May 2008 23:46:50 +0000
Size: 1982
Url: http://www.polarhome.com/pipermail/apakabar/attachments/20080517/e6f216b4/attachment.mht