";}
    # Check email syntax with regex
    if (preg_match('/^([a-zA-Z0-9\._\+-]+)\@((\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,7}|[0-9]{1,3})(\]?))$/', $email, $matches)) {
        $user = $matches[1];
        $domain = $matches[2];
        # Check availability of  MX/A records
        if ($this->domainCheck) {
            if(function_exists('checkdnsrr')) {
                # Construct array of available mailservers
                if(getmxrr($domain, $mxhosts, $mxweight)) {
                    for($i=0;$inameservers = array ('127.0.0.1', '127.0.0.1');

                $mx_response = $resolver->query($domain, 'MX');
                $a_response  = $resolver->query($domain, 'A');
                if ($mx_response) {
                    foreach ($mx_response->answer as $rr) {
                            $mxs[$rr->exchange] = $rr->preference;
                    }
                    asort($mxs);
                    $mailers = array_keys($mxs);
                } elseif($a_response) {
                    $mailers[0] = gethostbyname($domain);
                } else {
                    $mailers = array();
                }

            }

            $total = count($mailers);
            # Query each mailserver
            if($total > 0 && $this->verify) {
                # Check if mailers accept mail
                for($n=0; $n < $total; $n++) {
                    # Check if socket can be opened
                    if($this->debug) { echo "Checking server $mailers[$n]...\n";}
                    $connect_timeout = $server_timeout;
                    $errno = 0;
                    $errstr = 0;
                    # Try to open up socket
                    if($sock = @fsockopen($mailers[$n], 25, $errno , $errstr, $connect_timeout)) {
                        $response = fgets($sock);
                        if($this->debug) {echo "Opening up socket to $mailers[$n]... Succes!\n";}
                        stream_set_timeout($sock, 30);
                        $meta = stream_get_meta_data($sock);
                        if($this->debug) { echo "$mailers[$n] replied: $response\n";}
                        $cmds = array(
                            "HELO $this->helo_address",

                            "MAIL FROM: <$this->probe_address>",
                            "RCPT TO: <$email>",
                            "QUIT",
                        );
                        # Hard error on connect -> break out
                        # Error means 'any reply that does not start with 2xx '
                        if(!$meta['timed_out'] && !preg_match('/^2\d\d[ -]/', $response)) {
                            //$error = "Error: $mailers[$n] said: $response\n";
                            break;
                        }
                        foreach($cmds as $cmd) {
                            $before = microtime(true);
                            fputs($sock, "$cmd\r\n");
                            $response = fgets($sock, 4096);
                            $t = 1000*(microtime(true)-$before);
                            if($this->debug) {echo htmlentities("$cmd\n$response") . "(" . sprintf('%.2f', $t) . " ms)\n";}
                            if(!$meta['timed_out'] && preg_match('/^5\d\d[ -]/', $response)) {

                                //just made for some particular case, skip these type of mail:laurac@morrish.co.uk
                                $pos = strpos($response, "Mailwall Protocol error");
                                if( $pos === false )
                                {
                                    $error = "ERROR:UNVERIFIED";
                                    break 2;
                                }
                               
                                
                            }
                        }
                        fclose($sock);
                        if($this->debug) { echo "Succesful communication with $mailers[$n], no hard errors, assuming OK";}
                        break;
                    } elseif($n == $total-1) {
                        $error = "ERROR:NO_ACTIVE_MX";
                    }
                }
            } elseif($total <= 0) {
                $error = "ERROR:NO_MX";
            }
        }
    } else {
        $error = 'ERROR:EMAIL_SYNTAX';
    }
    if($this->debug) { echo "