I have a question about setting up Exchange 2003 servers.
CompanyX has a 2003 forest under companyx.com that has multiple domains such as accounting.companyx.com and sales.companyx.com and etc.
All the domains are under the same forest and managed by the enterprise manager for companyx.com and the Exchange 2003 servers serve them all under the companyx.com. All offices' data and emails are stored and managed by the managers for companyx.com
But let's say that the company wants to create an Internal Affairs division which cannot share information with any other divisions.
Is there a way to set up a separate forest and thus domain and separate exchange 2003 server, so that companyx.com enterprise managers have no authority and access to this domain BUT still have the same companyx.com domain name for emails? Can all the emails and files be stored in a separate windows 2003 server and exchange 2003 server managed by the Internal's enterprise manager.
i.e. Can there be an existence of internal.companyx.com as a separate entity ( forest/domain/server) without causing problems for companyx.com name?
How would this be set up? Thanks for your assistance.