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Event ID: 2253 Source: MSExchangeMTA

Source
Level
Description
Directory operation (om_get) failed with no data for type <number>.
Comments
 
As per Microsoft: "This event can be safely ignored unless it is accompanied by other error or warning events, such as non-delivery reports (NDRs) that are generated immediately after this event". See MSEX2K3DB for additional information about this event.
See ME271932 and ME300445 to fix this problem.

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