I decided to have a bash at this after doing a bit of research...
<?php
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) {
$i++;
if (preg_match("/^$hostname\tMX 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);
}
if (!function_exists('getmxrr')) {
function getmxrr($hostname, &$mxhosts, &$mxweight=false) {
return win_getmxrr($hostname, $mxhosts, $mxweight);
}
}
$domain='php.net';
echo "<pre>";
getmxrr($domain,$mxhosts,$mxweight);
print_r($mxhosts);
print_r($mxweight);
?>
