title: phpmailer Return-path
body: <p>How can I set the Return-path in phpmailer?
  I have this:</p>
  
  <pre><code>$mail = new PHPmailer();
  $mail-&gt;IsHTML(true);
  
  $mail-&gt;SetFrom($_SESSION['user_mail'], $_SESSION['user_name']);
  
  $mail-&gt;AddAddress($leverancier_mail, $leverancier_mail);
  $mail-&gt;AddBCC($config['kopie_mail'], $config['kopie_mail']);
  
  $mail-&gt;AddReplyTo($_SESSION['user_mail'], $_SESSION['user_name']);
  $mail-&gt;Sender = $_SESSION['user_mail'];
  </code></pre>
  
  <p>When an mail is returned it is send to the administrator instead of the sender. How can I make it return to the sender?</p>