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Add users from child domain to exchange2010 in root domain

Posted on 2011-02-22
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Last Modified: 2012-06-27
Just as the title says, i have a new exchange 2010 deployment in a root domain.  I also have another site that has a child domain that i want to be able to add users to the exchange server.  anyone have experience with this and maybe give me a quick howto?

Thanks

i've done in past with 2003 using RUS, but isn't that removed for 2010?
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Question by:jasonmichel
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Expert Comment

by:Amit
ID: 34954323
First you run from root domain

setup /PrepareAllDomains

When you want to create user mailboxes for users in a child domain you have to select a domain controller in the child domain when creating it.

Test it.
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Author Comment

by:jasonmichel
ID: 34954367
when i run that i get a box that says please go to the control panel to install and configure system components?
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Expert Comment

by:Amit
ID: 34954408
To run setup /PrepareAllDomains, you must be a member of the Enterprise Admins group
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Author Comment

by:jasonmichel
ID: 34954458
I am  and enterprise admin.  another odd thing is when i try to connect to that domain from root it can't find it, looks like they never set it up as a site in AD, so i went and did that, i suppose ill have to wait for replication a
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Expert Comment

by:Amit
ID: 34954502
Yes...
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Expert Comment

by:Amit
ID: 34954518
Try to fix the AD part, rest steps, I have already given.
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Author Comment

by:jasonmichel
ID: 34962402
yeah, after looking some more, looks like they named it like a child domain, but after checking closer, its its own domain in a new forest..so i'm looking at having to do a trust it looks like
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Amit earned 500 total points
ID: 34962626
In that case u need to use linked mailbox here

http://technet.microsoft.com/en-us/library/bb123524.aspx
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Author Comment

by:jasonmichel
ID: 34962643
so after i create the trust, ill have to use linked mailboxes to provide access?
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Expert Comment

by:Amit
ID: 34962645
remember to disable the account in Exchange forest
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Author Comment

by:jasonmichel
ID: 34962728
what if i just create users for them in the root exchange forest without setting up a trust?
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Expert Comment

by:Amit
ID: 34962786
That is better option...I prefer to keep Exchange separate. But how you will make use to access this forest?
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Expert Comment

by:Amit
ID: 34962796
But how you will make user to access this forest? If user is going to login to this new Exchange domain...then you are good....
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Author Comment

by:jasonmichel
ID: 34962813
i was thinking of maybe using like outlook anywhere, so i could create the user in AD of the exchange forest, then I could create a client cert for all the outlook machines?
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Expert Comment

by:Amit
ID: 34962866
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