|Component:||Microsoft Exchange Message Transfer Agent|
|Message:||A loop has been detected in the message <text> being transferred in. A non-delivery report was generated with reason code <error code> and diagnostic code <error code>. [<value> <value> <value> <value>] (14)|
A loop was detected in the message being transferred in. A non-delivery report (NDR) was generated.
The problem may be the existence of a redundant route located in the Intermediary or Hub Site within the path to the destination site. Examine your routing tables on all of your Exchange servers, particularly those running Exchange 5.5 and older. Use message tracking to help locate the problem.