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Deciphering Rejected (Bounced) E-mail

E-mail almost never vanishes into thin air. If a problem occurs with delivery, the sender virtually always gets a response, or "bounce", which consists of

  1. a normal header (usually from "Mailer-Daemon" or "Mail Delivery Subsystem")
  2. a section of information specifying what went wrong, and
  3. an optional section consisting of the original mail item

That second section is the vital one in figuring out what has happened. We at the Office of Information Technology (OIT) Help Desk hope that you or your unsuccessful correspondents will be able to use this document to figure out what happened. If you do decide to contact us by phone, please have it in printed form or on the screen so we can ask you about it.

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