Log new connections.

def connect(self, hostname, family, hostaddr):
        """
        Log new connections.

        """
        self.client_ip = hostaddr[0]
        self.client_port = hostaddr[1]
        self.time_start = time.time()
        logger.debug('<{}> Connect from {}[{}]:{}'.format(
            self.id, hostname, self.client_ip, self.client_port))
        return Milter.CONTINUE