Microsoft KB Archive/175588

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XFOR: Microsoft Exchange DX Returns Event ID 220 or 221

Article ID: 175588

Article Last Modified on 10/28/2006


  • Microsoft Exchange Server 4.0 Standard Edition
  • Microsoft Exchange Server 5.0 Standard Edition
  • Microsoft Exchange Server 5.5 Standard Edition

This article was previously published under Q175588


When starting the Microsoft Exchange Directory Synchronization Service (DXA), you may receive the following events in the Exchange Server Application Log:

   Event ID: 220
   Source: MSExchangeDX
   Description: Multiple dirsync messages to and from <Remote Dirsync
   Requestor Name> have been lost or delayed.

   Event ID: 221
   Source: MSExchangeDX
   Description: An Import Reply (full export) will be done to <Remote
   Dirsync Requestor Name> on the next reply.


The above errors can occur when there are corrupted messages located on the DXA queue in the Message Transfer Agent (MTA).


To remove corrupted DXA messages from the Exchange MTA, follow the steps outlined in the Microsoft Knowledge Base article, 164506, "XFOR: How to Remove a Corrupted DXA Message from Exchange MTA."

Keywords: kbprb KB175588