[earlymod-list] Returned mail: see transcript for details

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 ----- &lt;bc6a4755(a)lists.fas.harvard.edu&gt; (reason: 550 5.1.1 &lt;bc6a4755(a)smtp.fas.harvard.edu&gt;du>... User unknown) (expanded from: &lt;bc6a4755(a)lists.fas.harvard.edu&gt;) ----- Transcript of session follows ----- ... while talking to smtp.fas.harvard.edu.: <<< 550 5.1.1 &lt;bc6a4755(a)smtp.fas.harvard.edu&gt;du>... User unknown 550 5.1.1 &lt;bc6a4755(a)lists.fas.harvard.edu&gt;du>... User unknown <<< 503 5.0.0 Need RCPT (recipient)