Overview of configuration Basically, you will need to create a second virtual server and assign a different IP to this virtual server. Mail essentials will bind to this IP and virtual server. Inbound Mail must then be routed to the IP with Mail essentials, and Exchange 2000 routes outbound mail to the Mail essentials IP. Recommended! If you install 2 network cards you can create a secure environment by assigning the public IP to the Mail essentials virtual server and keeping your Exchange server on a private IP.