An unexpected exception %1 occurred while processing a command for user %2. %3

Details
Product: Exchange
Event ID: 2004
Source: MSExchangeIMAP4
Version: 8.0
Symbolic Name: UnexpectedExceptionAtCommand
Message: An unexpected exception %1 occurred while processing a command for user %2. %3
   
Explanation

This Error event indicates that an unexpected exception occurred when a command was processed in the user’s mailbox. Examples of commands to the user’s mailbox include the following:

  • Append Message

  • Get Message

  • Copy Message

An internal Microsoft® Exchange Information Store (MSExchangeIS) operation may generate this event. The causes of this event may be transient or permanent.

   
User Action

To resolve the error, follow one or more of these steps:

  • Review the specific description for the event in the application event log.

  • Look for related MSExchangeIS events in the application event log.

  • Check to see whether the MSExchangeIS service is up and running from the Services snap-in.

If you see too many of these event instances for different mailbox users, contact Microsoft Product Support Services. For more information, visit the Microsoft Help and Support Web site.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.

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