I just finished setting up my server. Something is a little odd though. I have 2 domains (example.net and example.com) pointing to the same directory /var/www/html/forum. They both show right, except for one thing. www.example.net shows the apache test page and all other inner pages give a forbidden error. However, www.example.com works fine just as its counterpart without the WWW. Why is that? Whats wrong with the .net domain?
Make sure that you have added aliases for both names to your site. If you are using third-party DNS you will have to make sure that is properly set up as well.