Returned mail: 17 Delivery failures on Tue, 06 Nov 2007

[Mail Delivery Subsystem <MAILER-DAEMON () mozart merit edu>]

On this date, there were delivery failures where the associated
deliver status notification messages were suppressed.

 --- The following addresses had suppressed delivery status notifications ---
nanog () trapdoor merit edu

   ----- Transcript of session is unavailable -----

Reporting-MTA: dns; mozart.merit.edu
Arrival-Date: Tue, 6 Nov 2007 00:00:00 -0500 (EST)

Final-Recipient: RFC822; nanog@trapdoor.merit.edu
Action: failed
Status: 5.2.0
Diagnostic-Code: SMTP; 550 5.7.1 message content rejected
Last-Attempt-Date: Tue, 6 Nov 2007 23:59:59 -0500 (EST)
X-Suppressed-Delivery-Status-Count: 17

No information is available on specific messages.