Body of message not being sent anymore.

Here is the code I'm using:
>
<?php
include('Mail.php');
>
$recipients = array('To' ='sanfranc...@yahoo.com',
);
>
$headers['From'] = 'techjoh...@gmail.com';
$headers['To'] = 'sanfranc...@yahoo.com';
$headers['Subject'] = 'Test message';
>
$body = 'Test message';
>
$params['sendmail_path'] = '/usr/lib/sendmail';
>
// Create the mail object using the Mail::factory method
$mail_object =& Mail::factory('sendmail', $params);
>
$mail_object->send($recipients, $headers, $body);
?>
>
Now the message is sent with the subject, but the body is not being
sent, why?
>
Thanks,
>
--TJ