Can I have a mixed environment of Exchange 2007 Maibox and Exchange 2013 CAS/HUB?

Posted on 2014-07-11
Last Modified: 2014-07-11
Can I have a mixed environment where my mailbox server is Exchange 2007 and my client access, hub transport and public folder server is Exchange 2013.

thank you
Question by:cyberleo2000
    LVL 16

    Expert Comment

    Yes you can.
    Have a look at the following link for further details.
    Client Connectivity in an Exchange 2013 Coexistence Environment
    LVL 63

    Accepted Solution

    You will still need to have Exchange 2007 hub and CAS servers.

    Exchange 2013 cannot be the CAS server for an Exchange 2007 mailbox server (so no getting the Exchange 2013 OWA for example for 2007 mailboxes).

    You can direct the traffic at the Exchange 2013 server, Outlook Anywhere and ActiveSync will proxy to the Exchange 2007 server, but OWA will require another host name so it can be redirected.

    Public Folders will have to remain on Exchange 2007 until you have migrated everyone to Exchange 2013 and removed the 2007 servers. There is no coexistence possible - it is a one way migration which requires a cut over to switch to Exchange 2013 modern public folders.


    Author Closing Comment

    Thank you for the quick response Simon. That is exactly what I was trying to confirm.

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