JSI Tip 3964. How do I create, Start, Stop, and Pause additional SMTP virtual servers?

Microsoft Knowledge Base Article 303707 contains the following summary:

This step-by-step guide describes how to create additional Simple Mail Transport Protocol (SMTP) virtual servers.

In most cases, you need only one SMTP virtual server. However, if you are hosting multiple domains and want, for example, to have more than one default domain, you can create multiple SMTP virtual servers.