Could not establish a signed Kerberos LDAP connection to %1. Please ensure the domain controller %1 is running Windows 2000 SP3 or later. %4

Details
Product: Exchange
Event ID: 8339
Source: MSExchangeAL
Version: 8.0
Symbolic Name: MSG_LDAP_SIGNING_ERROR
Message: Could not establish a signed Kerberos LDAP connection to %1. Please ensure the domain controller %1
is running Windows 2000 SP3 or later.

%4

   
Explanation

This Error event indicates that the Exchange server could not establish a signed Kerberos LDAP connection to domain controller %1 because the domain controller was not running the required version of Windows Server. Microsoft Exchange Server 2007 requires at least one Windows Server 2003 Service Pack 1 global catalog server in every Windows site to support Active Directory change notification.

   
User Action

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

  • Review the System and Application event logs 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.

  • Upgrade the server specified in this error event to the required version of Windows Server.

  • If you cannot resolve this error or if you experience other problems or mail flow interruptions in your Exchange environment, contact Microsoft Product Support Services. For information about contacting support, visit the Microsoft Help and Support Web site.

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.

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