|Message:||Process %1 (PID=%2). All Global Catalog Servers in forest %3 are not responding:
This Warning event indicates that DSAccess component on the Exchange server found no global catalogs suitable for LDAP queries. This can cause mail flow to stop. It can also cause problems with the address book services. It should be investigated immediately. This warning may be caused by the following conditions:
To resolve this warning do one or more of the following:
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.