mail() function & exchange

Hi php-general, a friend of mine is trying to set up an automated mailing function. The platform is Windows & he's using the last PHP release at this time. He asks me how to do it with Exchange, because it doesn't speak SMTP or not correctly? What is the matter? Is that true? But that's not really the question... could somebody point me to some documents where I could find out, what has to be done to make it work? Thanks M. PS: On the manual page of http://www.php.net I couldn't find anything about php & exchange... -- Who is the ennemy?