Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the mail system at host mailrelay.csn.ru.

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
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                   The mail system

<alliance-eco at csn.ru>: host mx.csn.ru[94.232.8.211] said: 550 5.1.1
    <alliance-eco at csn.ru>: Recipient address rejected: User unknown in local
    recipient table (in reply to RCPT TO command)
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From: "rudolfo sidharta" <csspc at lug-owl.de>
Subject: ??????????? ??????
Date: 22 Nov 2011 13:23:37 +0500
Size: 1056
URL: <http://lug-owl.de/pipermail/csspc/attachments/20111122/89cf2462/attachment.mht>