Yes, just one proxy mailbox in its own database on each server that holds a Public Folder database...
If you have only one server with a PF database, then you only need to create one proxy mailbox
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I am a bit confused about what mailbox(es) need to be created for proxy access to the on prem Exchange 2010 public folders.
https://video2.skills-academy.com/en-us/exchange/collaboration/public-folders/configure-legacy-public-folders-for-hybrid?view=exchserver-2019
Step 5 states
"You will point to all of the proxy public folder mailboxes that you created in Step 2: Make remote public folders discoverable to enable the Exchange Online organization to access the on-premises public folders."
In step 2 you create an empty mailbox database and populate it with a proxy mailbox. Is only one proxy mailbox required to facilitate access to all legacy public folders on a single host?
Yes, just one proxy mailbox in its own database on each server that holds a Public Folder database...
If you have only one server with a PF database, then you only need to create one proxy mailbox
So is it safe to say that once the mailbox is created and the following command is run - Mailboxes that have been migrated to Office 365 will be able to access on prem public folders?
Set-OrganizationConfig -PublicFoldersEnabled Remote -RemotePublicFolderMailboxes PFMailbox1,PFMailbox2,PFMailbox3
Thank you very much!!!