I would like to get someoneâs opinion on an Exchange 2007 design question that I have. We are looking to migrate from Lotus Notes to Exchange. Currently we have Notes servers spread out in 5 different sites and we would like to consolidate our worldwide Notes email infrastructure to just two separate sites each running Exchange in CCR configuration and possibly SCR a few databases between the two. One site would support our European offices and the other site for our US offices. I believe that this will be easier to manage since we have more IT resources in the two locations where Exchange will reside. We have a single AD forest with a single root and multiple subdomains. The root domain is used primarily as a placeholder. All of our end user accounts are stored in their respective sub domain. Root.dom Office1.root.dom (US) Office2.root.dom (US) Office3.root.dom (US) Office4.root.dom (Europe) Office5.root.dom (Europe) Each domain currently has their own administrator but the two domains that have adequate IT resources are located in the office1.root.dom and office4 .root.dom domains. Site 1 Ideally system administrators in the office1.root.dom domain will handle the exchange servers in their site. In addition to the exchange servers, they should have the necessary rights to manage office1, office2, and office3 user mailboxes stored on this server. Site 2 System administrators in the office 4.root.dom domain should have full access to the exchange servers in their site and also have the necessary rights to manage office4 and office5 user mailboxes stored on this server. My question is which domain should I install Exchange into. Should all exchange servers be members of the root domain or in a single sub domain (i.e. office1.root.dom). I want to be able to satisfy CCR and SCR requirements and make sure the above requirements are met. How does the security work for the four predefined Exchange 2007 groups work in a single forest, one root and multiple sub domain. I hope that I explained it clear enough and that it all makes sense. Thanks in advance.
