one of my client has windows 2000 server with 6/7 computers on it. They also have exchange server running on the server. Now basically we are hosting our website outside with another hosting provider. I looked into DNS setting for our domain www(from register.com) is pointing to an IP address(which I got from hosting provider) and email is pointing to an IP address which
is provided by our ISP.
Now we have a problem, we recently change Hosting company and new company gave us an IP address so I went to register.com and change IP address there. After 2 days I can go to new IP address website from our domain. But when I try go the website from our company it goes to old site. Also from our company we are unable to the site without using www. I think there are some setting on windows 2000 server where its pointing to old IP address please help me on that. Also tell me step by step because I'm not an expert on windows server. I'm a programmer and not an network admin.