Topic Last Modified: 2010-04-29

The Microsoft Exchange Server 2010 Management Pack for System Center Operations Manager monitors the Windows Application log on computers running Exchange 2010 and generates this alert when the events specified in the following Details table are logged.

To learn more about this alert, in Operations Manager, do one or more of the following:


Product Name


Product Version

14.0 (Exchange 2010)

Event ID


Event Source


Alert Type


Rule Path

Microsoft Exchange Server/Exchange 2010/Mailbox/System Attendant

Rule Name

Unable to generate an e-mail address. The address type was returned by address generation DLL.


This error may be triggered by multiple causes. Similarly, the method by which you resolve this error will depend on what triggered this event in your particular Exchange organization.

User Action

To resolve this error, follow one of more of these steps:

  • Run the tools that Exchange offers to help administrators analyze and troubleshoot their Exchange environment. Open the Toolbox node of the Exchange Management Console to run these tools now.

  • Review the Application log for related events. For example, events that occur immediately before and after this event may provide more information about the root cause of this error.

  • If you experience mail flow interruptions or other problems in your Exchange organization after you try to resolve this issue, contact Microsoft Customer Support Services. For information about how to contact support, visit Microsoft Help and Support.

For More Information

If you are not already doing so, consider running the Exchange tools created to help you analyze and troubleshoot your Exchange environment. These tools can help make sure that your configuration aligns with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. To run these tools, go to the Toolbox node of the Exchange Management Console. To learn more about these tools, see Managing Tools in the Toolbox.