The original message was received at Thu, 2 Oct 2008 07:19:58 -0700
from lb.z57.com [209.75.14.120]
----- The following addresses had permanent fatal errors -----
<sally@hotmail.com>
(reason: 550 Requested action not taken: mailbox unavailable)
----- Transcript of session follows -----
451 4.4.1 reply: read error from mx4.hotmail.com.
... while talking to mx1.hotmail.com.:
>>> DATA
<<< 550 Requested action not taken: mailbox unavailable
550 5.1.1 <sally@hotmail.com>... User unknown
<<< 503 Need Rcpt command.