Topic Last Modified: 2010-02-15

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

MSExchange ADAccess

Alert Type


Rule Path

Microsoft Exchange Server/Exchange 2010/Common Components/Active Directory Access

Rule Name

The site monitor failed in its attempt to check the current site name.


This Error event indicates that the Site monitor API did not find the local site name for the server that is running Microsoft Exchange Server. The Site monitor API discovers the site name where the Exchange server is installed. It also updates the msExchServerSite attribute of the Exchange server object when the local site name changes.

This event may occur for one or more of the following reasons:

  • The Exchange server is not correctly registered on the DNS server.

  • The Site monitor API cannot find the correct domain name.

User Action

To resolve this error, do one or more of the following:

  • Make sure that the Exchange server is correctly registered on the DNS server. For more information about how to troubleshoot DNS issues, see DNS Troubleshooting.

  • If you have defined multiple sites, make sure that you have created an IP subnet for each site. To configure an IP subnet, do the following:

    1. Start Active Directory Sites and Services on a local domain controller.

    2. In the left pane, expand Sites, right-click Subnets, and then click New Subnet.

    3. Specify the appropriate configuration information for the new subnet. Make sure that you associate the new subnet with the appropriate site name.

      For more information about how to configure Active Directory sites, see Creating an Active Directory Site for Exchange Server.

  • Review the Application log and System log for any corresponding Warning or Error events.

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.