|Message:||Protocol Analysis warning. No DNS entries were found for this server’s authoritative domains. Open proxy detection is not available.|
This Warning event indicates that the server could not resolve the domain for which it is authoritative in the domain records on the Domain Name System (DNS) servers it uses for name resolution. This Warning event is logged every five minutes until the server can resolve the domain in DNS.
No user action is required if this event is no longer logged. However, if the warning persists, 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.