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Mark Dobrzynski's avatar
Mark Dobrzynski
Copper Contributor
Nov 07, 2016

Migrating On-Prem Distribution Groups to Exchange Online in Hybrid Mode

I have come across a number of articles on migrating distribution groups to Office 365 when you're not in hybrid mode. My situation is having hundreds of DLs on my on-prem Exchange environment that I...
exchange
hybrid
office 365
On-Premises
Jason-EV's avatar
Jason-EV
Copper Contributor
Jun 04, 2020

TonyRedmondHi Tony and thanks for all the great info you've provided in this thread.

 

I'm getting ready to do a migration this weekend it looks like (have a Ex2010 Hybrid /O365 setup) and all my user's mb's are already up in the cloud but we have a lot of on-prem DG's.

 

Is there a PS command to pull the list of users for a specific group and save to a CSV?

Get-DistributionGroupMember ???

 

And then the corresponding  PS-online command to create the DG with the CSV list of users?

 

Maybe I missed it above but thanks!

Jason

  • TonyRedmond's avatar
    TonyRedmond
    MVP
    Jun 04, 2020

    Jason-EV 

     

    Get-DistributionGroupMember -Identity MyGroup | Select DisplayName, PrimarySmtpAddress | Export-CSV -NoTypeInformation c:\temp\DL.csv

     

    Something like that...

    • Jason-EV's avatar
      Jason-EV
      Copper Contributor
      Jun 04, 2020

      TonyRedmondgreat! thanks for fast reply! I'll give that try right now. By any chance do you know what it is for writing it or the Exchange Online side?

       

      If not I'll open a case. Thanks again!

      • spadge007's avatar
        spadge007
        Copper Contributor
        Oct 08, 2020

        This thread has been a big help as I am planning this currently.

         

        Would anyone be willing to share their script or know of a script which I can amend and use?

         

        I have a hybrid environment with Exchange 2010 and 2016. 2016 installed to setup the hybrid environment. All user & shared mailboxes etc have been migrated from 2010 to Exchange Online (EOL). Eventually I would like to fully retire on-premises exchange. All objects from on-prem to EOL are synced via Azure AD Sync.

         

        I am not proficient in PowerShell so any pointers would be a great help.

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