Ive set up this mail script and im having trouble actually recieving the form are thier any glaring mistakes in it?

<?php
if ($_POST) {
if (GET_MAGIC_QUOTES_GPC()) {
foreach ($_POST as $key => $value) {
$temp = stripslashes($value);
$_POST[$key] = $temp;
}
}
$to = 'forzaparma1@gmail.com';
$subject = 'Link Exchange';
$message = "From:".$_POST['name']."\n";
$message .= "Email:".$_POST['email']."\n";
$message .= "Website:".$_POST['site'];
$headers = "Reply-To:".$_POST['email'];
$sent = mail($to, $subject, $message, $headers);
}
?>