Subject: Delivery Notification: Delivery has failed

From: "PITT.EDU Postmaster" <[email-masked]>
Date: Tue, 19 Aug 2008 07:49:51 -0400 (EDT)

This report relates to a message you sent with the following header fields:

  Message-id: <[email-masked]>
  Date: Tue, 19 Aug 2008 04:47:35 -0700
  From: [email-masked]
  To: [email-masked]
  Subject: Mail System Error - Returned Mail

Your message cannot be delivered to the following recipients:

  Recipient address: [email-masked]
  Reason: Remote SMTP server has rejected address
  Diagnostic code: smtp;550 5.1.1 unknown or illegal user: [email-masked]
  Remote system: dns;pitt.edu.mail9.psmtp.com (TCP|136.142.11.139|45542|64.18.6.14|25)