public SmtpClientSession(ILog log, SmtpClientSessionConfiguration configuration, MessageData messageData)
        {
            _log = log;
            _configuration = configuration;

            _messageData = messageData;
        }
        public SmtpClientSession(ILog log, SmtpClientSessionConfiguration configuration, MessageData messageData)
        {
            _log = log;
            _configuration = configuration;

            _messageData = messageData;
        }