I need to adjust the settings of a contact form so that the format of the message that a AJAX/PHP script presents to the SMTP service works.

The critical part is the 'From field' it needs to show 'noreply@domain.org'

The message should output :

-----Original Message-----
From: noreply@domain.org [mailto:noreply@domain.org]
Sent: 01 March 2013 11:46
To: $name
Subject: $message.
The format of the message presents to the SMTP service is important.

My currrent php mail process script is;
PHP Code:
<?php
/*
Credits: Bit Repository
URL: http://www.bitrepository.com/
*/

include dirname(dirname(__FILE__)).'/config.php';

error_reporting (E_ALL E_NOTICE);

$post = (!empty($_POST)) ? true false;

if(
$post)
{
include 
'functions.php';

$headers 'From: name <noreply@domain.org>' .

$name stripslashes($_POST['name']);
$email trim($_POST['email']);
//$subject = stripslashes($_POST['subject']);
$message stripslashes($_POST['message']);

$error '';

// Check name

if(!$name)
{
$error .= 'Please enter your name.<br />';
}

// Check email

if(!$email)
{
$error .= 'Please enter an e-mail address.<br />';
}

if(
$email && !ValidateEmail($email))
{
$error .= 'Please enter a valid e-mail address.<br />';
}

// Check message (length)

if(!$message || strlen($message) < 15)
{
$error .= "Please enter your message. It should have at least 15 characters.<br />";
}

if(!
$error)
{
$mail mail(WEBMASTER_EMAIL"$headers",
     
"From: ".$name." <".$email.">\r\n"
    
."Reply-To: ".$email."\r\n"
    
."Message: ".$message."\r\n");

if(
$mail)
{
echo 
'OK';


}
else
{
echo 
'<div class="notification_error">'.$error.'</div>';
}

}
?>