[Tulungan] Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the mail system at host umka.yurteh.net.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

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 attached returned message.

                   The mail system

<alexis at yurteh.net>: host smtp.yurteh.net[193.23.181.52] said: 550 5.1.1
    <alexis at yurteh.net>: Recipient address rejected: User unknown (in reply to
    RCPT TO command)
-------------- next part --------------
An embedded message was scrubbed...
From: "jimbo ryan" <tulungan at polarhome.com>
Subject: =?koi8-r?B?4dfUz9PU0sHIz9fBzsnFIO/z4efv?=
Date: Thu, 17 Jul 2008 20:40:11 +0000
Size: 1914
Url: http://www.polarhome.com/pipermail/tulungan/attachments/20080707/5bca99b0/attachment.mht