The Simple Mail Transport Protocol is currently installed
[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 https://go.microsoft.com/fwlink/?linkid=34707.]
Topic Last Modified: 2007-01-22
Microsoft® Exchange Server 2007 setup cannot continue because the Microsoft Windows Server™ 2003 Simple Mail Transfer Protocol (SMTP) service is installed on this computer.
Microsoft Exchange setup requires that the SMTP service not be installed on servers that are used for Exchange 2007.
To resolve this issue, uninstall the SMTP service and rerun Microsoft Exchange setup.
To uninstall the SMTP service by using Add or Remove a Windows Component in Control Panel
On the Start menu, click Control Panel.
Double-click Add or Remove Programs.
Click Add/Remove Windows Components.
In the Components list, select the Application Server check box and then click Details.
Select Internet Information Services Manager and then click Details.
Select SMTP Service and then click to clear the check box.
Click OK two times to return to the Components list and then click Next.
Click Finish when the SMTP service is uninstalled.