The default virtual server is created with an IP address of
(All Unassigned). For instant operation, the POP3 service is
identified on the network with the Exchange computer's IP address.
This allows incoming connections on TCP port 110, and uses a
Secure Sockets Layer (SSL) port of 995.
For instant operation, you can use the default IP address, TCP
port, and SSL port, or you can assign a different IP address from
any available network card. However, if you plan to create multiple
POP3 virtual servers, you must create a unique combination of IP
addresses, TCP ports, and SSL ports for each server.
Even if you leave the default SSL port set to 995, to fully enable
SSL on the POP3 virtual server, you must request and install a certificate.