note 26536 added to ref.mail

I have had spam problems with my mail server i run so unfortunately i have had to et it so users are authenticated through teh SMTP session or at times over 400 messages are being bounced through my server. i was wondering if there is a way to have PHP authenticate itself, i can only send mail to my local adress so when people register for my forum they never recieve the email -- http://www.php.net/manual/en/ref.mail.php http://master.php.net/manage/user-notes.php?action=edit+26536 http://master.php.net/manage/user-notes.php?action=delete+26536 http://master.php.net/manage/user-notes.php?action=reject+26536