The problem I'm having is with the following code and how gmail handles it.

PHP Code:
$myname = "Auto Responder";
$mymail = "$clientemail";
$autoresp = "$email";

$subject2 = "Hello";
$body2 = "Thank you $Name!<br>Your information has been received. We will contact you as soon as possible.";
$body2 .= "<br>If you feel the need to contact us, please call us at $phone. Visit again at: $url";

$headers2  = "MIME-Version: 1.0" . "\r\n";
$headers2 .= "Content-type: text/html; charset=iso-8859-1" . "\r\n";
$headers2 .= "From: $myname <noreply@$hostname>" . "\r\n";
$headers2 .= "Reply-To: $clientemail" . "\r\n";

mail($autoresp,$subject2,$body2,$headers2); 
Gmail used to handle the headers just fine, but lately, it only seems to deal with MIME-Version: 1.0 and places the others as part of body content of the email. I don't know what changed or if my code was just faulty to begin with. I use zimbra for another email I test with and it manages all of this just fine.

Is it just gmail being more strict? Is my code faulty to begin with?