You want to move a mailbox to a new database, storage group, or server.
Open the ADUC snap-in.
This needs to be run on a workstation or server that has the Exchange Management Tools loaded (see Recipe 17.6).
If you need to change domains, right-click on Active Directory Users and Computers in the left pane, select Connect to Domain, enter the domain name, and click OK.
In the left pane, browse to the parent container of the user, right-click on the user, and select Exchange Tasks.
On the Welcome screen, click Next.
Select Move Mailbox and click Next.
Select new values for Server and Mailbox Store and click Next.
Select how you want to handle corrupted messages and click Next.
Specify when to start processing the move task and click Next.
When the Completed screen is shown, click Finish. If there are errors, select the View Detailed Report checkbox to get a failure report.
> exchmbx -b
Or alternatively, run the following command:
> exchmbx -b
<Home MDB URL>"
<UserDN> with the
user's distinguished name,
with the Exchange server name,
group> with the storage group,
store> with the mail store, and
<Home MDB URL> with the full
homeMDB URL for the desired
To move an existing mailbox for user joe to Exchange Server Srv1, Storage group SG1, and mailbox store DB1, execute the following ...