|Message:||An unexpected exception %1 occurred while processing a command for user %2. %3|
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:
An internal Microsoft® Exchange Information Store (MSExchangeIS) operation may generate this event. The causes of this event may be transient or permanent.
To resolve the error, follow one or more of these steps:
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.