MSExchange ADAccess 2124

  • Article

 

This article provides an explanation and possible resolutions for a specific Exchange event. If you don't find what you’re looking for here, try searching Exchange 2010 Help.

Details

Product Name

Exchange

Product Version

14.0

Event ID

2124

Category

Topology

Symbolic Name

DSC_EVENT_DNS_NO_ERROR_DC_NOT_FOUND

Message Text

Process %1 (PID=%2). Domain controller %3 was not found when DNS was queried for the service location (SRV) resource records for domain %4%n The query was for the SRV record for %5%n The following domain controllers were identified by the query:%n%6%n Common causes of this error include the following:%n - The DNS SRV records required to locate a domain controller for the domain are not registered in DNS. These records are registered with a DNS server automatically when a domain controller is added to a domain. They are updated by the domain controller at set intervals. This computer is configured to use DNS servers with following IP addresses:%n%7%n - One or more of the following zones do not include delegation to its child zone:%n%8%n For information about correcting this problem, %9%10

Explanation

This event indicates that Domain Name System (DNS) service resource (SRV) records for the specified domain controller cannot be found.

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

This event may be caused when a DNS SRV resource record is not registered in DNS. 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. 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 More Information

If you are not already doing so, consider running the Exchange tools, which have been 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 and improve mail flow. 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.