I have a 2003 SBS domain (i.e. 123.com) and a website that is hosted outside of the domain with the same domain name. From within the network, I am unable to access the website but I can access it from outside the internal network. I modified the Hosts file on one of the systems to reflect the public address and the website name (i.e. www.123.com) but it gave me an error 500 on the page. I have tried adding an Alias www entry in DNS but it did not work. Any help with this issue is much appreciated.