noerror php script for contact area

if (!array_key_exists('Submitted',$_POST))
{
?>

To:



From:



Subject:

}
else
{
ini_set('SMTP',$_POST['alinneaga.info']);
$To = $_POST['To'];
$From = 'From: ' . $_POST['From'];
$Subject = $_POST['Subject'];
$Message = $_POST['Message'];

if(mail($To,$Subject,$Message,$From))
{
echo "Message Sent";

}
else
{
echo "Message Not Sent";
}
}
?>