The original message was received at Fri, 29 Feb 2008 03:11:10 -0500
from [221.8.136.35]
----- The following addresses had permanent fatal errors -----
<bc6a4755(a)lists.fas.harvard.edu>
(reason: 550 5.1.1 <bc6a4755(a)smtp.fas.harvard.edu>du>... User unknown)
(expanded from: <bc6a4755(a)lists.fas.harvard.edu>)
----- Transcript of session follows -----
... while talking to
smtp.fas.harvard.edu.:
>> DATA
<<< 550 5.1.1
<bc6a4755(a)smtp.fas.harvard.edu>du>... User unknown
550 5.1.1 <bc6a4755(a)lists.fas.harvard.edu>du>... User unknown
<<< 503 5.0.0 Need RCPT (recipient)