Topic Last Modified: 2010-01-25

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

Couldn't find SRV records for specified domain controller. Records may not contain correct root hints. Use Dcdiag to verify DNS server config and health.


This event indicates that Domain Name System (DNS) service (SRV) records for the specified domain controller cannot be found. This event is logged when diagnostic logging on the MSExchangeADAccess\Topology component is set to Minimum or higher.

The specified domain controller will not be used by ADAccess. As long as there is sufficient capacity in suitable domain controllers, there is no mail flow interruption. We recommend that you investigate the issue and fix it.

This event may be caused when the following conditions are true:

  • A DNS SRV resource record that is used by this computer contains incorrect root hints.

  • One or more of the zones listed in the error message do not include a delegation to its child zone.

See the event description for detailed information about the cause of this event.

User Action

To resolve this event, verify that the SRV resource record for the requested domain and service type exists in DNS. You can do this using the Dcdiag command line tool. Run the Dcdiag command-line tool to test domain controller health. To do this, run dcdiag /s:<Domain Controller Name> at a command prompt on the Exchange server. Use the output of Dcdiag to discover the root cause of any failures or warnings that it reports. For more information, see Dcdiag Overview at the Windows Server TechCenter.

For additional information about troubleshooting DNS issues, see the following topics:

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.