Blue: Mother Company blue.com
Red: Subsidiary red.com (IT Services Company)
What Red needs from Blue:
Red employees need access to Blue's servers and network resources.
Red need their own email id such as User@red.com
Ideally Red could have its own domain, and therefore its own security policies which may conflict with Blues policies
In a move to provide Red its own foundation and corporate Identity Red has invested in HR Dynamics (HR Payroll) and its required Infrastructure. (SAN + Virtualization etc)
Is it possible to configure Blues Exchange servers (where currently all red employees exist as email@example.com) to accept mail for firstname.lastname@example.org & email@example.com?
Should we look into ADFS? (whats needed in this case is access to servers via RDC, no webapps as far as I know at this time, somehow still list firstname.lastname@example.org in Blue exchange directory.)
Its complex I know but essentially all red employees at this time still work for blue mostly. However the plan within the next 2 years or so is for Blue to start working on external company contracts in terms of IT Services.