Merge two Independent AD domains/forests & Exchange
Posted on 2010-09-21
I have two independent domains/forests, call them A.ORG.COM & B.ORG.COM; there is no common 'root' forest/domain. Each forest/domain has been operating independently for years, now management wants to merge B.ORG.COM with A.ORG.COM and keep A.ORG.COM as the domain name.
B.ORG.COM has over 25 AD servers and Exchange servers due to it being spread over a WAN with slow links. Each site has it's own mailboxes; some sites are as small as 10 and others are around 300 users. This was done so that the Users would see their email ‘leave’ as soon as they hit Send as well as to help with logon.
I have searched for days for good articles concerning what I am trying to accomplish but cannot seem to find one that fits my scenario. The articles I have read thus far are about establishing trusts to share resources or migrating both forests/domains to a new name. I would love to just establish the two way trusts, but management is insistent that they no longer want B.ORG.COM to exist.
Thanks in advance.