PHP Mail problem

[joe2]

<?php

while(list($key, $val) = each($HTTP_POST_VARS)) {
$key = stripslashes($key);
$val = stripslashes($val);
$msg .=" $key= " . $val . "<br>";

}

$headers="MIME-Version: 1.0\r\n";   
$headers.="Content-type: text/html; charset=iso-8859-1\r\n";   
$headers.="From:".$HTTP_POST_VARS['email'];


$recipient="[e-mail]";
$subject="My feedback form";

mail($recipient,$subject,$msg,$headers); 

?>

Code is not working in outlook express.It is not showing the header information.<br> is also not working .<br> print as text.

But if i check my mail in internet explorer at the address given by my webspace provider,everything comes absolutely correct.What may be the possible problem.Pls help.Thanks

[bubblenut]

In outlook do you have Tools>Options>Mail Format> set to HTML?

[joe2]

But i am able to receive HTML newsletter.I will try your option also.Thanks a lot.