A non-delivery report (reason code and diagnostic code ) is being generated for message . It was originally destined for (recipient number ), and was to be redirected to . [ ] (12)

Details
Product: Exchange
Event ID: 290
Source: MSExchangeMTA
Version: 6.5.6940.0
Component: Microsoft Exchange Message Transfer Agent
Message: A non-delivery report (reason code <error code> and diagnostic code <error code>) is being generated for message <message id>. It was originally destined for <recipient> (recipient number <value>), and was to be redirected to <recipient>. [<value> <value> <value> <value>] (12)
   
Explanation

A non-delivery report (NDR) is sent to the originator of a message. It indicates which message was not delivered and why.

   
User Action

Verify that the NDR was generated for legitimate reasons, such as content that was too lengthy or delivery restrictions, rather than because of a communications failure, a routing misconfiguration, or another type of misconfiguration.

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