รุ้เลยว่าใช้ editplus

Warning: fsockopen() [function.fsockopen]: php_network_getaddresses: getaddrinfo failed: Name or service not known

Warning: fsockopen() [function.fsockopen]: unable to connect to :25 (Unknown error)

ลองแล้วขึ้นแบบนี้ครับ

function win_getmxrr($hostname, &$mxhosts, &$mxweight=false) {
    if (strtoupper(substr(PHP_OS, 0, 3)) != ‘WIN’) return;
    if (!is_array ($mxhosts) ) $mxhosts = array();
    if (empty($hostname)) return;
    $exec=’nslookup -type=MX ‘.escapeshellarg($hostname);
    @exec($exec, $output);
    if (empty($output)) return;
    $i=-1;
    foreach ($output as $line) {
        $i++;
        if (preg_match(“/^$hostnametMX preference = ([0-9]+), mail exchanger = (.+)$/i”, $line, $parts)) {
          $mxweight[$i] = trim($parts[1]);
          $mxhosts[$i] = trim($parts[2]);
        }
        if (preg_match(‘/responsible mail addr = (.+)$/i’, $line, $parts)) {
          $mxweight[$i] = $i;
          $mxhosts[$i] = trim($parts[1]);
        }
    }
    return ($i!=-1);
}

// Define
if (!function_exists(‘getmxrr’)) {
    function getmxrr($hostname, &$mxhosts, &$mxweight=false) {
        return win_getmxrr($hostname, $mxhosts, $mxweight);
    }
}

function checkEmail($email)
{
if (eregi(“^[a-zA-Z0-9_]+@[a-zA-Z0-9-]+.[a-zA-Z0-9-.]+$]”, $email)) {
return false;
}

list($Username, $Domain) = split(“@”,$email);

if (getmxrr($Domain, $MXHost)) {
return true;
} else {
if (fsockopen($Domain, 25, $errno, $errstr, 7)) {
return true;
} else {
return false;
}
}
}แบบนี้ใช้ได้ทั้ง Windows และ Linux