Syncing on Premise Exchange 2010 Public Folders to Office 365

jpcapone 1,491 Reputation points
2020-12-31T20:50:52.803+00:00

I am prepping to perform the process listed here "Configure legacy on-premises public folders for a hybrid deployment". Step 4 indicates that you should run Sync-MailPublicFolders.ps1 -Credential (Get-Credential) -CsvSummaryFile:sync_summary.csv

If I understand the process correctly, the Office 365 mailboxes are accessing the public folders directly on prem so I am confused at to what exactly is synchronizing when you run the Sync-MaillPublicFoders script?

Microsoft Office Online Server
Microsoft Office Online Server
Microsoft on-premises server product that runs Office Online. Previously known as Office Web Apps Server.
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Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
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Accepted answer
  1. Andy David - MVP 149.2K Reputation points MVP
    2020-12-31T21:03:35.97+00:00

    Hey there
    All that does is sync the PFs as mail-enabled objects so they can be seen in the Outlook GAL by your Exchange Online Mailboxes.
    It also allows you to give send as permissions for 365 mailboxes to those objects that represent the PFs - as well as make them "viewable" by any transport rules you may create in Exchange Online.

    Note that they will show up as contacts in Exchange Online, not public folders.

    Its not absolutely required that you sync these by the way. Your Exchange Online mailboxes will still be able to access the on-prem Public Folders even if you dont do this step.


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