title: Email confirmation "from" field is not working
body: <p>The following is code on my site for sending a confirmation email when the user signs up.  The email gets sent just fine but the sender is blank (it comes up as "unknown sender").  I would like it to come from my email, from ABC Technologies. </p>
  
  <pre><code>{
  // ---------------- SEND MAIL FORM ----------------
  // send e-mail to ...
  $to=$user;
  // Your subject
  $subject="Your confirmation link here";
  
  // From
  $header="from: ABC Technologies";
  // Your message
  $message="Confirmation link for college match site\r\n";
  $message.="Click on this link to activate your account \r\n";
  $message.="http://$_SERVER[HTTP_HOST]/chat_site/confirmation.php?passkey=$confirm_code";
  // send email
  $sentmail = mail($to,$subject,$message,$header, "-f ABC Technologies");
  }
  </code></pre>