www.pudn.com > umpl_xmail-2.11.rar > README.W32

o PHP is by default installed with a very paranoid error logging:
  -> set "error_reporting = E_ALL & ~E_NOTICE" inside php.ini

o If you have PHP running as CGI, http-Authentification via PHP does not
  work. A Workaround is to set those vars inside /root/class.php:

  $PHP_AUTH_USER=
  $PHP_AUTH_PW  =

  -> You have to restrict Access to /root/ BY YOUR OWN (Windows IIS Control
  Panel?)

o autoreply currently does not work on Windows platform - Sorry MCSEs - not 
  the time, hard- and software for fixing this.