How to Disable SMTP Service Socket Pooling

Use the Mdutil.exe utility that is located on the Windows 2000 CD-ROM distribution media to disable SMTP Service socket pooling:
1. Copy the Mdutil.ex_ file from the I386 folder on the Windows 2000 CD-ROM to the InetPub\Adminscripts folder on your local hard disk.
2. Open a command prompt, change the location to the folder in which you copied the Mdutil.ex_ file, and then type the following command:

expand mdutil.ex_ mdutil.exe

3. Type the following command at the command prompt, and then press ENTER:

mdutil.exe enum -path:smtpsvc

4. Type the following command at the command prompt, where number is the SMTP Service number for which you want to disable socket pooling, and then press ENTER:
mdutil set -path smtpsvc/number -value 1 -dtype 1 -prop 1029 -attrib 1
NOTES:
• Run this command for each virtual server with a different value for number if you have multiple SMTP virtual servers.
• When you type the command, do not include a space between "smtpsvc/" and "number".
5. In the IIS snap-in, change the listening address for SMTP Service to an internal interface on the server.
After you disable socket pooling and change the SMTP Service listening address, you can use Server Publishing rules to publish an internal SMTP server.