running Apache and IIS on Win 2000 Server, email proplem

[kpm]

Hi,
I think my problem has to do with php not being able to access the smtp service because IIS is using it??? We have a Windows 2000 Server running both Apache (on port 8080) and IIS (on port 80).

I have installed Mantis on the Apache server but I cannot get it to send email so people can create accounts...

We get the following error:

PROBLEMS SENDING MAIL TO: someone@domain.com
Mailer Error: Could not instantiate mail function.

The php.ini file's mail function was edited:

[mail function]
; For Win32 only.
SMTP = localhost
smtp_port = 25
; For Win32 only.
sendmail_from = smtp.domain.com

Any one have any suggestions??

Thanks