This Error event indicates that one of the servers that is running Microsoft® Exchange Server processes crashed. The process ID (PID) for this process is specified in the event description.
To resolve this error, contact Microsoft Product Support Services. For more information about how to contact support, 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.