[Mobilepartners] Returned mail: User unknown

[postoffice@broad.mit.edu]

The original message was received at 2009-04-04 08:18:43 -0400
from postoffice.broad.mit.edu [10.0.0.1]

   ----- The following addresses had permanent fatal errors -----
<dunnr at broad.mit.edu>

   -----Transcript of session follows -----
... while talking to postoffice.broad.mit.edu.:
>>> RCPT To:<dunnr at broad.mit.edu>
<<< 550 5.1.1 unknown or illegal alias: dunnr at broad.mit.edu
550 <dunnr at broad.mit.edu>... User unknown
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From: VIAGRA X Official Site <mobilepartners at mit.edu>
Subject: Re: [Mobilepartners] Dear mobilepartners at mit.edu USA Pharmacy ID
	87309316
Date: Fri, 3 Apr 2009 11:45:41 +0100
Size: 7842
Url: http://mailman.mit.edu/pipermail/mobilepartners/attachments/20090404/f3250c90/attachment.eml