Exchange 2010 moving primary site to another location


need help with the following scenario: All users and servers are currently at SiteA. We have created a remote site  (SiteB) and installed Exchange servers at this new site. We now have to migrate all mailboxes to the new site while users will still be located at siteA.
My concern: Is there any configuration I need to be aware of, particularly CAS before we start migrating user mailboxes to the new site. I am concerned about autodiscover, DNS, internal and external URL's.

Thanks for your guidance.
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Amit KumarCommented:
Are you planning for Datacenter switch over?

or you want to simply move all mailboxes from Site A to Site B?
Antonio02Author Commented:
Hi Amit,

We are moving mailboxes from SiteA to SiteB. users will still be at SIteA.

albert_miquelit managerCommented:
You just need to move all mailboxes from one server to the other you can set a move and the move will be done mailbox to mailbox
The clients internally vía ad should detect the change automatically
The mailbox is not accessible whiltelist is moving from site a to b
The rest of mailboxes are accessible

You should have a cas role server conected for external access , cas will check where the mailbox is located
The only thing that can cause a problem is with public folders , each mailbox has a public folder server
If you want public folders to be replicated to the New server you should créate a public folder Store on the site b server and configure replication
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Amit KumarCommented:
Which is your internet facing site, both or only one.

If one then configure CAS proxying on non-internet facing CAS servers. If you have both internet facing then configure silent redirection.

You may have public folders so it depends on you that you replicate both site's public folders or not. If you use then you must have configured Public folder replica.
Antonio02Author Commented:
Hi Amit,

For some time, both servers will be internet facing. At some time, the CAS server at siteA will be decommissioned.

Amit KumarCommented:
So better you enable CAS redirection, in case one user try to connect with Site A but his/her mailbox is homed on SiteB so request will be redirected to Site B. but make sure you  have both internet facing CAS on that time, it is not possible to have it some times... it should be permanent.

Once you are done with migration of all mailbox to Site B then you can point Autodiscover record to Site B, and then you can remove records for Site A, which will make Site A out of scene.

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Antonio02Author Commented:
Thanks for your feedback gents. Appreciate it
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