The original message was received at Wed, 8 Oct 2008 08:45:03 -0700
from lb.z57.com [209.75.14.120]
----- The following addresses had permanent fatal errors -----
<df@aol.com>
(reason: 550 MAILBOX NOT FOUND)
----- Transcript of session follows -----
... while talking to mailin-04.mx.aol.com.:
>>> RCPT To:<df@aol.com>
<<< 550 MAILBOX NOT FOUND
550 5.1.1 <df@aol.com>... User unknown