The original message was received at Wed, 31 Oct 2007 10:39:55 -0400
from 190-173-212-63.speedy.com.ar [190.173.212.63] (may be forged)
----- The following addresses had permanent fatal errors -----
<servicetutors-list(a)lists.fas.harvard.edu>
(reason: 550 5.1.1 <servicetutors-list(a)smtp.fas.harvard.edu>du>... User unknown)
(expanded from: <servicetutors-list(a)lists.fas.harvard.edu>)
----- Transcript of session follows -----
... while talking to
smtp.fas.harvard.edu.:
>> DATA
<<< 550 5.1.1
<servicetutors-list(a)smtp.fas.harvard.edu>du>... User unknown
550 5.1.1 <servicetutors-list(a)lists.fas.harvard.edu>du>... User unknown
<<< 503 5.0.0 Need RCPT (recipient)