Internal mail flow outside without disable mailbox and user access


  • Hi,
    it organization two domains A - Exchange 2007 and B - Exchange 2013. Migration from A to B by export/import mailbox, because all user at domain B and only mailboxes at A.
    Migration plan:
    1. Enable mailbox for user at B, after that only external mail will flow no new mailbox
    2. Export mailbox A data to PST, and than disable A mailbox
    3. Import PST mailbox to B new mailbox.
    4. Sync contacts, from A to B, and from B to A
    5. Clear outlook cache
    How I can make (coerce) Exchange 2007 (A) internal  massage flow to external smart host for custom user, without disable mailbox and user access.

    Thank you!

    Friday, September 16, 2016 4:51 PM

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