The original message was received at Fri, 24 Apr 2009 15:10:23 -0700
from lb.z57.com [209.75.14.120]
----- The following addresses had permanent fatal errors -----
<caca@aol.com>
(reason: 550 MAILBOX NOT FOUND)
----- Transcript of session follows -----
... while talking to mailin-01.mx.aol.com.:
>>> RCPT To:<caca@aol.com>
<<< 550 MAILBOX NOT FOUND
550 5.1.1 <caca@aol.com>... User unknown