SMTP site link found

[This topic is intended to address a specific issue called out by the Exchange Server Analyzer Tool. You should apply it only to systems that have had the Exchange Server Analyzer Tool run against them and are experiencing that specific issue. The Exchange Server Analyzer Tool, available as a free download, remotely collects configuration data from each server in the topology and automatically analyzes the data. The resulting report details important configuration issues, potential problems, and nondefault product settings. By following these recommendations, you can achieve better performance, scalability, reliability, and uptime. For more information about the tool or to download the latest versions, see "Microsoft Exchange Analyzers" at]  

Topic Last Modified: 2006-12-07

The Microsoft® Exchange Server Analyzer Tool displays this warning if it finds Simple Mail Transfer Protocol (SMTP)–based site links in the Active Directory® directory service.

Microsoft Exchange Server 2007 routing will ignore Active Directory sites connected by SMTP site links. If Exchange 2007 is installed in sites that are connected only by an SMTP site link, routing errors will occur.

To address this issue, replace the SMTP site links with IP-based site links.

For more information about Active Directory IP site links, see "Planning to Use Active Directory Sites for Routing Mail" (