PHP4 Win2K Server IIS5 and SMTP

[Anon]

OK, I've finally gone from an UNKNOWN error to a SERVER error using the virtual SMTP server in IIS5 for W2KServer. Can anyone help me out here? here's the settings I have:
The virtual server is called: localhost
It's ip is: 154.5.34.237 25
The domains are: statik-first
localhost.com
There are no sessions.

My PHP.ini has the following:

[mail function]
SMTP = localhost ;for win32 only
sendmail_from = [e-mail] ;for win32 only
;sendmail_path = ;for unix only, may supply arguments as well (default is 'sendmail -t -i')

What to do?!

[Anon]

Make sure you have enabled SMTP relay under "Default SMTP Virtual Server" in ISM.

[Anon]

You are the man Jonathan, I've surfed everywhere for 2 days and no one knew the answer, I enabled SMTP relay and blam WORKS!!!

Thanks!!