PHP Mail Issue – mail()

This script worked last night, and tonight for some reason it does not. Also, I have this script (headers and all that) in another area and it seems to work fine. I know there is a value in the $sess_email, due to displaying after the mail function.

//

<?php

session_start();
$send_email = $_POST[‘send_email’];

$headers = “From: <“.$fr_name.”>”.$fr_email.”n”
. “Reply-To: “.$fr_email.”n”
. “MIME-Version: 1.0n”
. “Content-type: text/plain; charset=”ISO-8859-1″n”
. “Content-transfer-encoding: quoted-printablen”;
$subject = $fr_init.” Information “;
$message = $fr_init.” Type “.$fr_type;

mail($send_email, $subject, $message, $headers) or die (“Error sending message!”);

echo “<center>An E-mail has been sent to your account (“.$send_email.”)<br>Please close this window”;

?>
////////////
Thanks in advance if anyone has thoughts.

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