I have built two server internal to our network. One is a web server (Linux) and the other is an Exchange 2007 server. Internally we have Active Directory setup with a domain called DOMAIN.COM. We have been hosted by GoDaddy with out web and email for DOMAINSITENAME.COM
We are moving our website and email to our internal servers. Is it ideal to change the design of our internal domain to be DOMAINSITENAME rather than DOMAIN or should I keep the infrastructure the same and use our DNS server to redirect the domains?
I worked for the government in Australia for 2 years and they had there internal domain name COUNCIL (council.NAME.qld.gov.au). So do we need to change it for best practices and have something like DOMAIN.DOMAINSITENAME.COM for our internal network?