Undelivered Mail Returned to Sender

[MAILER-DAEMON@mx1.domaindiscover.com (Mail Delivery System)]

This is the Postfix program at host mx1.domaindiscover.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

<zackzluo@yahoo.com>: host mx2.mail.yahoo.com[64.157.4.78] said: 553 VS10-RT
    Possible forgery or deactivated due to abuse (#5.1.1) (in reply to RCPT TO
    command)

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Could not process part with Content-Type: message/delivery-status.

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---- Begin included message ----

• To: <support@geometry.net>
• Subject: Thank you!
• From: <amath351@amath.washington.edu>
• Date: Tue, 26 Aug 2003 6:17:51 --0400
• Importance: Normal

Please see the attached file for details.

---- End included message ----