Indicates whether this event occurred as a result of calling Disconnect method so that the proper logout command was issued to the server, or the connection was terminated.

Gets application-level protocol of the closed connection.

Gets a reference to the end point of the remote host to which the connection was closed.

Gets the name of the remote host to which the connection was closed.

Gets a reference to the object which was supplied by the developer in state parameter of asynchronous methods of the mailer components.