I know this is not the question you asked, but in my experience, PHP runs
much much better under Apache than IIS. Perhaps you should consider using
Apache. (I used to run both IIS 5 and IIS 6 with PHP and it was terribly
slow. I installed Apache for Windows and it is 1000% better.)
Anyway, there i
PHP MAIL() relies on SMTP to send email. You will need to figure out where
on your network is an SMTP mail server. If you send mail to/from the
Internet, you will have one. Exchange 5.5 has the Internet Mail Connector,
and Exchange 2000 uses, by default, only SMTP.
A workaround maybe to setup an S