|Message:||Connection Filter agent: DNS is not configured. IP Allow List and Block List providers will be skipped.|
This Error event indicates that no Domain Name System (DNS) servers are configured in the advanced properties of the TCP/IP configuration of the network adapter on the server. IP Allow list and IP Block list and IP Block list providers and Safelist functionality will not function until this error is resolved.
To resolve this error, follow one or more of these steps:
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.