protected function _getMx($host)
    {
        $mx = array();

        if ($this->params['netdns']) {
            $this->_loadNetDns();

            try {
                $response = $this->_resolver->query($host, 'MX');
                if (!$response) {
                    return false;
                }
            } catch (Exception $e) {
                throw new Horde_Mail_Exception($e);
            }

            foreach ($response->answer as $rr) {
                if ($rr->type == 'MX') {
                    $mx[$rr->exchange] = $rr->preference;
                }
            }
        } else {
            $mxHost = $mxWeight = array();

            if (!getmxrr($host, $mxHost, $mxWeight)) {
                return false;
            }

            for ($i = 0; $i < count($mxHost); ++$i) {
                $mx[$mxHost[$i]] = $mxWeight[$i];
            }
        }

        asort($mx);

        return $mx;
    }
protected function _getMx($host)
    {
        $mx = array();

        if ($this->params['netdns']) {
            $this->_loadNetDns();

            try {
                $response = $this->_resolver->query($host, 'MX');
                if (!$response) {
                    return false;
                }
            } catch (Exception $e) {
                throw new Horde_Mail_Exception($e);
            }

            foreach ($response->answer as $rr) {
                if ($rr->type == 'MX') {
                    $mx[$rr->exchange] = $rr->preference;
                }
            }
        } else {
            $mxHost = $mxWeight = array();

            if (!getmxrr($host, $mxHost, $mxWeight)) {
                return false;
            }

            for ($i = 0; $i < count($mxHost); ++$i) {
                $mx[$mxHost[$i]] = $mxWeight[$i];
            }
        }

        asort($mx);

        return $mx;
    }
protected function _getMx ( $ host ) { $ mx = array ( ) ; if ( $ this -> params [ 'netdns' ] ) { $ this -> _loadNetDns ( ) ; try { $ response = $ this -> _resolver -> query ( $ host , 'MX' ) ; if ( ! $ response ) { return false ; } } catch ( Exception $ e ) { throw new Horde_Mail_Exception ( $ e ) ; } foreach ( $ response -> answer as $ rr ) { if ( $ rr -> type == 'MX' ) { $ mx [ $ rr -> exchange ] = $ rr -> preference ; } } } else { $ mxHost = $ mxWeight = array ( ) ; if ( ! getmxrr ( $ host , $ mxHost , $ mxWeight ) ) { return false ; } for ( $ i = 0 ; $ i < count ( $ mxHost ) ; ++ $ i ) { $ mx [ $ mxHost [ $ i ] ] = $ mxWeight [ $ i ] ; } } asort ( $ mx ) ; return $ mx ; }
Recieve MX records for a host.

@param string $host  Mail host.

@return mixed  Sorted MX list or false on error.
Recieve MX records for a host .