we have 2 domain that not connect to each other, every domain have Exchange 2010.
in one domain, i have 6 users that need to move to the second domain and they want to move the mailboxs to this domain.
the size on one of the user mailbox is 20GB.
what is the best way to move those mailbox's.


asked 11/22/2011 05:24

assilev's gravatar image

assilev ♦♦

8 Answers:
Thought of this as well, since I need to do that soon at our company.
I had the idea of creating an additional database in Exchange. Move the account/mailboxes to that one. Detach, copy this to other server and attach again, then then move mailbox from the additional db to the target database.

But that is just a thought, perhaps someone can verify if this is correct.


B-Byte's gravatar image


Please find the below to export it to pst.

Shell command for create PST for bulk users with single command.

get-mailbox -Organizationunit test1 | export-mailbox -pstfolderpath d:\pst

answered 2011-11-23 at 01:46:16

sekar_raj32's gravatar image


u can do it immediately, find the below link

answered 2011-11-23 at 01:48:45

msabry06's gravatar image


Check out the attached guide how to move user with mailbox from one domain to another domain.
Its based on from exchange 2003 to exchange 2010 but I believe this work for you from 2010 to 2010  

answered 2011-11-23 at 01:50:46

akicute555's gravatar image


The two domain are not on the same forest, so i cant use cross forest move mailbox.
i think i go with PST file.

my q is?
i use outlook 2010,
there is a limitation PST file size to 2GB or there is have larger file that i can move the 20GB mailbox once?

or i need to create 10 PST files of 2GB each?

answered 2011-11-23 at 02:25:24

assilev's gravatar image


To setup cross-forest migration with ILM is overkill for 6 users, as the cost is way to high for such small group of users.

Easiest would be to export the 6 mailboxes as PST-files, create new accounts on the target server, import the PST files and add a second accepted domain in Exchange if they want to keep their old email addresses (remember to update the external DNS to point to the new exchange server).

answered 2011-11-23 at 05:54:47

xcomiii's gravatar image


the users in my Org working with OST files.

answered 2011-11-23 at 05:55:42

assilev's gravatar image


Exchange can export to PST-files from any mailbox, on the exchange server itself. It does not matter if your clients are using offline or online mode from Outlook.


answered 2011-11-23 at 05:57:44

xcomiii's gravatar image


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Asked: 11/22/2011 05:24

Seen: 406 times

Last updated: 12/12/2011 08:05