Getting Rid of Thousands of Duplicate Messages...Help! I wrote Yahoo, but got no reply

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I have Internet Explorer and, more important, Yahoo E-mail. Lately I'm
getting thousands of duplicate messages, most beginning with Mail
Delivery Subsystem and they all look like this:

The original message was received at Mon, 18 Jun 2007 03:03:27 -0400
(EDT)
from ms-mss-02-smtp-a [10.10.4.11]

----- The following addresses had permanent fatal errors -----
<dlgreeneinc@xxxxxxx>
(reason: 550 We would love to have gotten this email to
dlgreeneinc@xxxxxxxx But, your recipient never logged... super
features offered by AIM Mail. And by the way, they're also missing out
on your email. Thanks.)
<dlpoulin@xxxxxxx>
(reason: 550 MAILBOX NOT FOUND)
<dlshaps@xxxxxxx>
(reason: 550 We would love to have gotten this email to
dlshaps@xxxxxxxx But, your recipient never logged ont... super
features offered by AIM Mail. And by the way, they're also missing out
on your email. Thanks.)
<dmeyer444@xxxxxxx>
(reason: 550 MAILBOX NOT FOUND)
<doi063@xxxxxxx>
(reason: 550 We would love to have gotten this email to
doi063@xxxxxxxx But, your recipient never logged onto... super
features offered by AIM Mail. And by the way, they're also missing out
on your email. Thanks.)
<dominiquecrenn@xxxxxxx>
(reason: 550 MAILBOX NOT FOUND)
<donnablaklemore@xxxxxxx>
(reason: 550 MAILBOX NOT FOUND)

----- Transcript of session follows -----
.... while talking to mailin-01.mx.aol.com.:
RCPT To:<donnablaklemore@xxxxxxx>
<<< 550 MAILBOX NOT FOUND
550 5.1.1 <donnablaklemore@xxxxxxx>... User unknown
RCPT To:<dominiquecrenn@xxxxxxx>
<<< 550 MAILBOX NOT FOUND
550 5.1.1 <dominiquecrenn@xxxxxxx>... User unknown
RCPT To:<doi063@xxxxxxx>
<<< 550 We would love to have gotten this email to doi063@xxxxxxxx
But, your recipient never logged onto their free AIM Mail account.
Please contact them and let them know that they're missing out on all
the super features offered by AIM Mail. And by the way, they're also
missing out on your email. Thanks.
550 5.1.1 <doi063@xxxxxxx>... User unknown
RCPT To:<dmeyer444@xxxxxxx>
<<< 550 MAILBOX NOT FOUND
550 5.1.1 <dmeyer444@xxxxxxx>... User unknown
RCPT To:<dlshaps@xxxxxxx>
<<< 550 We would love to have gotten this email to dlshaps@xxxxxxxx
But, your recipient never logged onto their free AIM Mail account.
Please contact them and let them know that they're missing out on all
the super features offered by AIM Mail. And by the way, they're also
missing out on your email. Thanks.
550 5.1.1 <dlshaps@xxxxxxx>... User unknown
RCPT To:<dlpoulin@xxxxxxx>
<<< 550 MAILBOX NOT FOUND
550 5.1.1 <dlpoulin@xxxxxxx>... User unknown
RCPT To:<dlgreeneinc@xxxxxxx>
<<< 550 We would love to have gotten this email to
dlgreeneinc@xxxxxxxx But, your recipient never logged onto their free
AIM Mail account. Please contact them and let them know that they're
missing out on all the super features offered by AIM Mail. And by the
way, they're also missing out on your email. Thanks.
550 5.1.1 <dlgreeneinc@xxxxxxx>... User unknown


-----Inline Message Follows-----


Date: Sun, 17 Jun 2007 23:03:26 -0800
From: cposternak@xxxxxxxxxx
Subject: Larisa Contact

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