The ServerName property returns the name of the mail server
that the client is connected to. Setting this property specifies the
host name or Internet address for a subsequent connection.
If the ServerName property is not explicitly set, then an
application must provide the host name or address to the
Connect method. Once the connection has been established, this
property will be updated with the appropriate value. If the server
uses a non-standard port number, it can be specified using the
ServerPort property.
The mail server must support Post Office Protocol v3 (POP3) to
retrieve messages. Setting this property does not affect what server
is used to deliver messages. See the RelayServer and
RelayPort properties to specify a mail server that is
responsible for relaying messages.