def ex_delete_mail_redirect(self, mail_r):
        zone_id = mail_r.zone.id
        mail_r_id = mail_r.id
        try:
            self.connection.request('/zones/%s/mail_redirects/%s' % (zone_id,
                                    mail_r_id), method='DELETE')
        except (BaseHTTPError, MalformedResponseError):
            e = sys.exc_info()[1]
            if isinstance(e, MalformedResponseError) and e.body == 'Not found':
                raise PointDNSException(value='Couldn\'t found mail redirect',
                                        http_code=httplib.NOT_FOUND,
                                        driver=self)
            raise PointDNSException(value=e.message, http_code=e.code,
                                    driver=self)
        return True
:param mail_r: Mail redirect to update
dataset/ETHPy150Open apache/libcloud/libcloud/dns/drivers/pointdns.py/PointDNSDriver.ex_delete_mail_redirect