Forum Discussion
Solved
Azure AD Connect and "Exchange hybrid deployment" write-back
At a management level, one of the assumptions (correct or incorrect) when opting for Office 365 was that synchronization would be one-way (from our Active Directory to the Office 365/Azure). Unless o...
Why the need not to writeback?
If you have mailboxes both and in 365, you'll want that writeback enabled.
For example the legacyExchangeDN of a moved mailbox is written back as an X500 address on-prem to the remote mailbox .
If you dont have that, its going to cause issues for your Outlook clients with cached values and public folders.
if you have less than several thousand users, best to avoid exchange hybrid. go for cutover migration instead.