Returned mail: Service unavailable

The original message was received at Wed, 8 Aug 2007 10:10:00 -0400 (EDT)
from dxb-b123929.alshamil.net.ae [86.98.36.53]

*** ATTENTION ***

Your e-mail is being returned to you because there was a problem with its
delivery. The address which was undeliverable is listed in the section
labeled: "----- The following addresses had permanent fatal errors -----".

The reason your mail is being returned to you is listed in the section
labeled: "----- Transcript of Session Follows -----".

The line beginning with "<<<" describes the specific reason your e-mail could
not be delivered. The next line contains a second error message which is a
general translation for other e-mail servers.

Please direct further questions regarding this message to your e-mail
administrator.

--AOL Postmaster

   ----- The following addresses had permanent fatal errors -----
<aaronjericho_at_aol.com>

   ----- Transcript of session follows -----
... while talking to air-mb04.mail.aol.com.:
>>> DATA
<<< 554 TRANSACTION FAILED - Unrepairable Virus Detected. Your mail has not been sent.
554 <aaronjericho_at_aol.com>... Service unavailable