|Message:||Process %1 (PID=%2). Exchange Active Directory Provider detected that Active Directory server %3 is reachable again via port %4.|
This Informational event indicates that the specified domain controller that was not reachable during the last Active Directory® topology discovery is now reachable.
Note This event is logged when the diagnostic logging level on Validation counter of the MSExchangeADAccess performance object is set to Medium.
For detailed information about increasing diagnostic logging levels, see Changing Process Logging Levels.
No user action is required.
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.