Avatar of Julian123
 asked on

Migrating to a new Active Directory forest with Exchange

We have an AD forest called olddomain.local Windows 2003 active directory with Exchange 2007. We plan to build a new forest called newdomain.local and running Windows 2008 r2 active directory and Exchange 2010.  We then want to migrate all mailboxes, user accounts, goups, etc. from one to the other. The reason we are building a new forest as we want to change the internal domain name.

How should I go about doing this?
ExchangeActive Directory

Avatar of undefined
Last Comment

8/22/2022 - Mon
Wasim Shaikh

I will suggest you to have a look at http://www.simple-talk.com/sysadmin/exchange/upgrade-from-exchange-2007-to-exchange-2010---part-1/ and www.simple-talk.com/sysadmin/exchange/upgrade-from-exchange-2007-to-exchange-2010---part-ii/

There are many articles which will give you a good idea on how and what has to be done.

A paid version of guide is available at http://exchangeserverpro.com/exchange-server-2010-migration

Thanks, but these articles do not cover cross forest scenarios. I'm looking for one that does as I need to do that migration as well
Wasim Shaikh

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question
Wasim Shaikh

This will give you idea on how to get it done, not exactly what you have to do, coz almost all network infrastructure and scenarios are different.
Your help has saved me hundreds of hours of internet surfing.
Ilya Rubinshteyn

Create the new domain, install exchange, create all the connectors, etc. create trust between the two forests/two domains, ensure the each domain's account is in the enterprise admins group of the other, migrate mailboxes, public folders, etc, updated the policies, test mailflow

If you only have a small number of users, it would be much easier to just export/import PST files for each mailbox, and use the built-in tools in Windows 2008 R2 to import CSV files with users/groups.

So it will be like this:
1. Setup the new AD and make sure everything works perfect.2
2. Install Exchange in the new AD.
3. Import users/groups (export them as CSV files and import them)
4. Copy some basic settings in the users profiles like favorites, as you need to have completely new profiles on Win2008 R2 (since you are also change Windows version).
5. Create new mailbox users in Exchange based on the CSV file earlier.
6. Import PST files from old users mailbox.