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Exchange 2010 SP1 to Exchange 2010 SP1 Cross-Forest Distribution List Migration

    Question

  • Hello Everyone!

    The web is littered with ALL kinds of documentation/forums/etc. on migrating AD accounts/mailboxes/public folders/distribution lists from one forest to another, but almost always in the scenario of an upgrade from Exchange 2003/2007 to Exchange 2010.

    Right now, I am planning out and about to begin testing a pretty modest cross-forest migration for AD/Exchange. Our company bought another company, and we are migrating all of their resources and users/mailboxes into our domain from their domain. Both domains are running at a Windows Server 2003 Forest/Domain Functional Level, but both have 2008 R2 DCs, and both are running Exchange 2010 SP1 envrionments. THERE IS NO EXCHANGE UPGRADE HAPPENING DURING THIS MIGRATION! It is simply migrating resources from one domain to another like domain. It is also even less complicated, as the company only has about 25 employees. This should be pretty cut and dry, compared to a lot of other migrations. However, documentation for this particular scenario seems to be significantly lacking on the web, and as this is my first migration ever, I would love some clarification on migrating the Distribution Groups.

    I already have a new Windows Server 2008 R2 virtual machine stood up with ADMT 3.2 installed. Already initialized ADMT by migrating a single global group. No problems. There is a one-way trust in place, in which the acquired company's domain trusts our domain. Things are looking good. I just want clarification before attempting the distribution list migration.

    Pretty much, what I need to know is, what are the appropriate steps to take to migrate DLs? Do I migrate the Distribution Groups in AD first with the ADMT, and then update their Exchange attributes with some sort of PS script, followed by migrated the DLs within Exchange with another Exchange PS script? Or is there a different/preferred way of doing this? I know this is a lot of words for such a simple request, but I want to keep all the facts straight and make sure that I tackle all aspects of this migration properly.

    Thank you in advance for your input and help!

    Josh

    Tuesday, August 23, 2011 2:12 PM

Answers

  • Distribution groups are simply Active Directory objects. ADMT migrates them. However, you may have to tweak certain mail properties such as the address after you migrate them, perhaps with a PowerShell script.
    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
    • Marked as answer by ren_freak Wednesday, August 24, 2011 1:29 PM
    Wednesday, August 24, 2011 3:48 AM
  • Hi,

    Just make sure that the groups are of type Universal and they you need to mailenable them.
    In EMS: Enable-Distributiongroup -Name DL_SomeName -Displayname DL_Somename

    ...or you can do this in EMC with "New Distribution Group" and choose an existing group.


    Martina Miskovic
    • Marked as answer by ren_freak Wednesday, August 24, 2011 1:29 PM
    Wednesday, August 24, 2011 1:01 PM

All replies

  • Distribution groups are simply Active Directory objects. ADMT migrates them. However, you may have to tweak certain mail properties such as the address after you migrate them, perhaps with a PowerShell script.
    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
    • Marked as answer by ren_freak Wednesday, August 24, 2011 1:29 PM
    Wednesday, August 24, 2011 3:48 AM
  • Distribution groups are simply Active Directory objects. ADMT migrates them. However, you may have to tweak certain mail properties such as the address after you migrate them, perhaps with a PowerShell script.
    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

    Agreed

     

    ADMT Tool use to migrate AD Objects. 

     

    You Can first migrate the objects than change the Exchange Attributes. use shell command/Script for update


    "Abhi" "Exchange Specialist" ------------- Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.
    Wednesday, August 24, 2011 4:07 AM
  • Distribution groups are simply Active Directory objects. ADMT migrates them. However, you may have to tweak certain mail properties such as the address after you migrate them, perhaps with a PowerShell script.
    Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

    Agreed

     

    ADMT Tool use to migrate AD Objects. 

     

    You Can first migrate the objects than change the Exchange Attributes. use shell command/Script for update


    "Abhi" "Exchange Specialist" ------------- Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.


    Agreed, please update on this

     


    Mihir Nayak
    Wednesday, August 24, 2011 4:13 AM
  • Thank you everyone for your input! Sounds pretty straightforward. One last request: as to the shell command/script that you mentioned, is there a particular/recommended one out there that accomplishes this, or a built-in one? If not, since there are only about 10 DLs, can I migrate the accounts with the ADMT tool, and then go into the ESM and create new DLs, linking them to the newly migrated groups in AD?

    Thanks again for the awesome help!

    Josh

    Wednesday, August 24, 2011 12:45 PM
  • Hi,

    Just make sure that the groups are of type Universal and they you need to mailenable them.
    In EMS: Enable-Distributiongroup -Name DL_SomeName -Displayname DL_Somename

    ...or you can do this in EMC with "New Distribution Group" and choose an existing group.


    Martina Miskovic
    • Marked as answer by ren_freak Wednesday, August 24, 2011 1:29 PM
    Wednesday, August 24, 2011 1:01 PM
  • Awesome! Thank you so much for your help on this, guys!
    Wednesday, August 24, 2011 1:29 PM