Hi Doug From what you say you would be best off with two separate AD forests combined using some sort of Meta Directory Service. Something like Simple Sync (http://www.cps-systems.com/) may well give you what you need. Be aware that splitting them off from you altogether is no small job. Rebuilding an AD domain from scratch will break virtually everything that of theirs that is in your current domain. Hope that helps. Bye for now. Paul. ----- Original Message ----- From: Stelley, Doug To: [ExchangeList] Sent: Friday, May 02, 2003 1:45 PM Subject: [exchangelist] Re: Child domain? http://www.MSExchange.org/ You see? That's why I wanted to begin planning early! We will have to maintain their servers & software for them here at the main site, but from a user standpoint, they will be split into a new organization. New Addressing / naming convention et.al. Logically, a completely new AD with E2k would be best, but we need to be the Enterprise admin overall. -----Original Message----- From: paul_lemonidis@xxxxxxxxxxx [mailto:paul_lemonidis@xxxxxxxxxxx] Sent: Friday, May 02, 2003 8:30 AM To: [ExchangeList] Subject: [exchangelist] Re: Child domain? http://www.MSExchange.org/ Hi Doug SBS will only allow to you to create a new Forest with the server being the root of it. Thus I am farid what you are propsoing isn't possible with SBS. However, you could install a Windows 2003 server in to a workgroup and then install AD and create a child Domain within the smae Forest. Do remember that if they subsequently wish to install E2K or E2K3 on the server or another server in their child Domain they will be using your Global Address List as they will still be in your Domain forest. would that be a problem? If it is the best long term solution, although rather laborious to say the least, may be to create them their own independent AD strcuture. Hope that helps. Regards, Paul Lemonidis. ----- Original Message ----- From: Stelley, Doug To: [ExchangeList] Sent: Friday, May 02, 2003 1:07 PM Subject: [exchangelist] Child domain? http://www.MSExchange.org/ My organization has to spin off some of our clinics in a few months; I'd like to run this by you all. Currently the users there are in our domain, and use our exchange for mail etc. Can I buy them a new server with SBS(Small Business Server), create a new child domain in our existing forest using SBS? Or maybe a server with Windows Server 2003, promote to a domain controller in its own child domain, with exchange 2000 standard (I have an unused license). There are only about 50 users there. I'm looking for the best solution, and need to plan for it now. Doug Stelley Network Admin. 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