mail() not working on Win2k

I'm running under Win2k, new install of PHP(last week), I have been trying to test the mail() function, but it doesn't seem to work. I host my own mail server on the same machine and I know it works, has been for months, all other mail come/goes just fine. I don't have the default SMTP server for IIS installed since I have my own SMTP/POP3 mail server on this same server. I have tried it with the following: mail("me@mydomain.com", "test message", "this is a test"); I have SMTP authentication turned off on my mail server for this testing. It never arrives, I never get an error. I can telnet to port 25, all works fine. phpinfo.php reports that everything looks good, only thing i saw was that the extension directory shows c:\php4 instead of c:\php. I don't have any extra .dll's or anything turned on since it has built-in support for MySQL. Can someone PLEASE help. ================================ Rad Craig