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.