[Test2] Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the Postfix program at host moan.bur.st.

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 Postfix program

<test2 at backtick.org>: host spawncamp.net[208.75.86.54] said: 550 Spam is not
    welcome here. (in reply to RCPT TO command)
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An embedded message was scrubbed...
From: VIAGRA ® Official Site <test2 at backtick.org>
Subject: Dear test2 at backtick.org April 80% 0FF
Date: Tue, 29 Apr 2008 18:59:52 +0800 (WST)
Size: 2442
Url: /archives/test2/attachments/20080429/f02d65eb/attachment.eml