Exchange 2010 Co Existence with Exchange 2016 Hybrid - Public Folder Migration

Question

I am deploying Exchange 2016 into an Exchange 2010 environment with the intention of migrating the Exchange 2010 mailboxes to Office 365. Due to Exchange 2010 EOL I am installing classic Hybrid on Exchange 2016. Exchange 2010 also hosts Public Folders. From my research it seems that the MRS proxy has to be on the server that hosts the public folders in order to migrate them. So is my only real option to migrate the public folders to Exchange 2016 and then migrate them to Office 365?

Answer 1

Actually, 2010 uses an Outlook Anywhere endpoint, and you can migrate them directly from 2010 to ExO even if 2016 Hybrid is enabled.
So, in other words, what you want to do will work.
Migrate Mailboxes via the 2016 endpoint
Migrate the legacy 2010 Public Folders via the 2010 OutlookAnywhere endpoint.

See:
https://www.enowsoftware.com/solutions-engine/migration-of-legacy-public-folder-to-modern-public-folder-in-exchange-online

https://learn.microsoft.com/en-us/exchange/collaboration-exo/public-folders/batch-migration-of-legacy-public-folders

Specfically:

https://learn.microsoft.com/en-us/exchange/collaboration-exo/public-folders/batch-migration-of-legacy-public-folders#step-5-start-the-migration-request

On the legacy Exchange server, run the following command to synchronize mail-enabled public folders from your local Active Directory to Exchange Online.

Answer 2

@jpcapone

Agree with AndyDavid, and the provided articles are very helpful. We can migrate legacy public folders from Exchange 2010, and make sure Outlook Anywhere is enabled on your Exchange 2010.

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Answer 3

Hi @Andy David - MVP & @Lydia Zhou - MSFT !
I have a Exchange 2016 Coexistence Environment with Exchange 2010 so the namespace (OWA, OA, Autodiscover) point to Exchange 2016. The PFs are hosted in Exchange 2010.

His recommendations are to have 2 migration endpoints: one for public folder migration, and other, for mailbox migration. But in Exchange 2016 Coexistence Environment with Exchange 2010, I need to have the same ExternalHostName in Outlook Anywhere for both Exchange 2010 and Exchange 2016 for coex working. I am right?

I ask you this because I read the article https://www.enowsoftware.com/solutions-engine/migration-of-legacy-public-folder-to-modern-public-folder-in-exchange-online and see that it use 2 different names and I don't know if that is possible. Also, the autodiscover record should point to the Exchange On-Premise server with the most updated version.

Could you help me?

Thanks!!

Answer 4

Hi All, knowing this environment has exchange 2010 & 2016 with hybrid exchange online through excahnge 2016, is it works for calendar sharing and Global address list between exchange 2010 mailbox n exchange online mailbox ?

thanks

Novih