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Cross Forest Migration: Synchonize shared mailboxes RRS feed

  • Question

  • Forest A: Exchange 2003, Forest B: Exchange 2010, Cross Forest migration

    How I could synchonize shared mailboxes during coexistence?

     

     

    Wednesday, August 31, 2011 3:39 PM

Answers

  • Sure, with Outlook!  You can also export to a PST using Exmerge on the Exchange 2003, and using New-MailboxImportRequest on Exchange 2010.

    You'll have issues with addresses not matching, particularly internal addresses if you don't add the legacyExchangeDN attribute from one forest's mailbox to the corresponding address in the other forest as a proxy address of type "X500" (no dot).  You may have other issues too if you don't do an account migration with SID history.

    Actually, you'd do this:

    forest 1 mailbox > PST1

    PST1 > forest 2 mailbox

    forest 2 mailbox > PST2

    PST1 > forest 1 mailbox

    No need to merge.

    But this is not a good method for coexistence, just a migration.  You may have problems with duplicates if you try to do this for coexistence.  Also, it's rather labor-intensive and time-consuming.

    Seriously, look into the Cemaphore tool if you want coexistence.  Alternatively, migrate everything over a weekend and be done with it.

     


    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
    • Proposed as answer by Jason LJS Friday, September 2, 2011 1:36 AM
    • Marked as answer by Jason LJS Monday, September 5, 2011 1:20 AM
    Thursday, September 1, 2011 12:55 AM

All replies

  • Nothing native does that, but a third-party service like this one will do it for you:

    http://www.cemaphore.com


    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
    Wednesday, August 31, 2011 3:42 PM
  • is there any way to export mailbox to pst and after import it... (or similar):

    Mailbox1@contoso.com Forest1 > pst1
    Mailbox1@contoso.com Forest2 > pst2

    merge pst1 & pst2 = pst3

    pst3 > Mailbox1@contoso.com Forest1
    pst3 > Mailbox1@contoso.com Forest2

     

    Wednesday, August 31, 2011 3:54 PM
  • Sure, with Outlook!  You can also export to a PST using Exmerge on the Exchange 2003, and using New-MailboxImportRequest on Exchange 2010.

    You'll have issues with addresses not matching, particularly internal addresses if you don't add the legacyExchangeDN attribute from one forest's mailbox to the corresponding address in the other forest as a proxy address of type "X500" (no dot).  You may have other issues too if you don't do an account migration with SID history.

    Actually, you'd do this:

    forest 1 mailbox > PST1

    PST1 > forest 2 mailbox

    forest 2 mailbox > PST2

    PST1 > forest 1 mailbox

    No need to merge.

    But this is not a good method for coexistence, just a migration.  You may have problems with duplicates if you try to do this for coexistence.  Also, it's rather labor-intensive and time-consuming.

    Seriously, look into the Cemaphore tool if you want coexistence.  Alternatively, migrate everything over a weekend and be done with it.

     


    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
    • Proposed as answer by Jason LJS Friday, September 2, 2011 1:36 AM
    • Marked as answer by Jason LJS Monday, September 5, 2011 1:20 AM
    Thursday, September 1, 2011 12:55 AM