Choose which protocol should be used for this specific port. When a client connects to the port, hMailServer will use this protocol to parse the incoming commands from the client.
Specify the TCP/IP address hMailServer should listen on. The default value, 0.0.0.0, means that hMailServer will listen on all available IP addresses. For IPv6 the equivalent default value is ::
The port number hMailServer should listen on, on the specified IP address.
Select the connection security to be used for the port.
If you have choosen to use SSL/TLS or StartTLS, you must select which SSL certificate you want to use for this specific port.
For TCP/IP Sending port see SMTP Relayer.