( () Proc ) (MTA () Proc ) Add operation failed, entity already configured (4)

Details
Product: Exchange
Event ID: 523
Source: MSExchangeMTA
Version: 6.5.6940.0
Component: Microsoft Exchange Message Transfer Agent
Message: (<value> <value>(<number>) Proc <number>) (MTA <value>(<number>) Proc <number>) <date/time> Add operation failed, entity <distinguished name> already configured (4)
   
Explanation

This event can occur in environments that have migrated from an Exchange 5.x environment to a pure Exchange 2000 environment. This does not necessarily indicate a problem. If there are no accompanying symptoms being reported (such as blocked mail), then this event can be ignored. However, if there are other more serious events being logged and there are mail flow problems, this event needs to be investigated.

   
User Action

If you are encountering mail flow problems after this event has occurred, refer to Microsoft Knowledge Base article 816466 for further information. If there are no accompanying symptoms but this event is logged repeatedly, possibly with other message transfer agent (MTA) events, contact Microsoft Product Support Services for assistance.

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