7.1. Creating a New SMTP Virtual Server
Problem
You need to create an additional SMTP virtual server.
Solution
Open the Exchange System Manager (Exchange System Manager.msc).
Expand the organization→ Administrative Groups→ target administrative group→ Servers→ target server→ Protocols→ SMTP.
Right-click the SMTP container and click New → SMTP Virtual Server. Enter the name of the new virtual server instance and click Next.
Select the specific IP address this virtual server listens on or leave it on All Unassigned. Click Finish to create the new instance. If the combination of IP address and port is not unique on this server, the new instance will not start.
To modify the port assignment, right-click the new virtual server instance and click Properties. On the General tab, click the Advanced button. Select the identity and click Edit. Modify the TCP/IP port and click OK twice.
Click OK to close the property sheet.
Discussion
Every Exchange 2000 and Exchange Server 2003 server creates a default virtual server instance that is configured to listen on all unassigned IP addresses on port 25. As you create additional virtual servers, you should assign them to specific IP addresses or alternate ports so that they do not interfere with the default virtual server instance. Assigning servers to alternate ports, however, can cause problems with messages passed between virtual server instances using SMTP, such as those between servers in an organization; they will not be able to communicate if one ...