mail() not sending when adding headers.

[zalez]

I have a script that gets email addresses from a db and sends them. I can send them and have clients receive them when there are no headers sent with it. but I want to send html emails also so I need headers and when I send it that way the clients never receive the email and I dont get any errors.

$boundary = md5(uniqid(time()));

$headers  = 'From: ' . $from . "\n";
$headers .= 'To: ' . $myrow[email] . "\n";
$headers .= 'Return-Path: ' . $from . "\n";
$headers .= 'MIME-Version: 1.0' ."\n";
$headers .= 'Content-Type: multipart/alternative; boundary="' . $boundary . '"' . "\n\n";
$headers .= $message . "\n";
$headers .= '--' . $boundary . "\n";
$headers .= 'Content-Type: text/plain; charset=ISO-8859-1' ."\n";
$headers .= 'Content-Transfer-Encoding: 8bit'. "\n\n";
$headers .= $message . "\n";
$headers .= '--' . $boundary . "\n";
$headers .= 'Content-Type: text/HTML; charset=ISO-8859-1' ."\n";
$headers .= 'Content-Transfer-Encoding: 8bit'. "\n\n";
$headers .= $message . "\n";
$headers .= '--' . $boundary . "--\n";

$mailOk=mail('', $subject,'', $headers); 

Anyone have any ideas why?