As new messages arrive, deliver them to the lamson relay.

def received_new(self, msg):
        """
        As new messages arrive, deliver them to the lamson relay.
        """
        logger.info("Receiving msg, delivering to Lamson...")
        logger.debug("Relaying msg to lamson: From: %s, To: %s",
                     msg['From'], msg['To'])
        self._relay.deliver(msg)