Returned mail: User unknown

The original message was received at Sat, 6 Sep 2003 16:44:59 -0400 (EDT)
from  [163.180.127.185]


*** 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 -----
[off-list ref]

   ----- Transcript of session follows -----
... while talking to air-xn01.mail.aol.com.:

quoted

quoted

RCPT To:[off-list ref]

<<< 550 MAILBOX NOT FOUND
550 [off-list ref]... User unknown