where to configure email server for Send email when someone sign the guestbook function

So the Subject is pretty much the question... I have read the admin panel, it says that the feature will work if the email is configured correctly. I went through the config files and pretty much all of the php files that would relate to email and I can't figure out what email server it is trying to use, but I never receive emails when someone signs my guestbook.

If you need any information from my files, let me know and I will post it up for you to see.

Thanks.

The guestbook uses PHPs mail() function to send emails. If the emails are not being sent then possibly your host has not set up the email function in PHP.