Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the mail system at host a.smtp.cyber.net.pk.

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

<bblaudit at cyber.net.pk>: host 61.5.158.179[61.5.158.179] said: 554 5.7.1
    <bblaudit at cyber.net.pk>: Recipient address rejected: Account does not exist
    (in reply to RCPT TO command)
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From: pkg-games-devel at lists.alioth.debian.org
Subject: {Filename?} Delivery reports about your e-mail
Date: Fri, 24 Aug 2012 15:23:33 +0530
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URL: <http://lists.alioth.debian.org/pipermail/pkg-games-devel/attachments/20120824/c9055d4d/attachment.mht>