[Tulungan] {Spam? 3.13} Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the Postfix program at host mail.helastel.com.

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

<aft21 at zimerka.ru>: user unknown. Command output: Invalid user specified.
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From: =?koi8-r?B?69XMyd7FzsvPIA==?= <tulungan at polarhome.com>
Subject: =?koi8-r?B?UkU6IMbBy9Mg+tfPzsnUxSArNyAoNDk1KSAyMi0xNTQtMjIgIA==?=
Date: 30 Jun 2008 13:25:48 -0600
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Url: http://www.polarhome.com/pipermail/tulungan/attachments/20080630/1077ca6a/attachment.mht