Non Delivery Notification

Non Delivery Notification

A non-delivery notification is an email sent by an email system to indicate that an email has not been delivered. This is often referred to as an NDN or NDR. Some email systems are configured not to generate NDNs.

cf RNDR.

For more information see:

• www.computerperformance.co.uk/exchange2003/exchange2003_NDR.htm - Introduction to Exchange Server Non Delivery Reports