Share via

Steps tp remove on premises Exchange from a hybrid setup

Gareth Davies 276 Reputation points
2023-03-29T16:51:28.7866667+00:00

We have a single Exchange server on premises, it was being used just as a transport server for our scan to email and for some application email. Everything has now been reconfigured so the Exchange server is not required, email is sent via Exchange Online and does not touch on premises Exchange.

We want to decommission this server, but I am having trouble finding a definitive answer as to how I can do this without causing issues.

How can I remove this from service and switch to just Exchange online?

Active Directory is all on premises, we have an AADC server to sync AD to Azure/M365. The Exchange server is a Hyper-V virtual machine running Server 2016 and Exchange 2016

Microsoft Exchange Online
Exchange Server
Exchange Server
A family of Microsoft client/server messaging and collaboration software.
1,197 questions
Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
1,999 questions

1 answer

Sort by: Most helpful
Most helpful Newest Oldest
  1. Andy David - MVP 145.6K Reputation points MVP
    2023-03-29T16:58:34.5333333+00:00

    If you are syncing with AADConnect, its not supported to remove the last Exchange Server unless you meet certain requriements:

    https://learn.microsoft.com/en-us/exchange/decommission-on-premises-exchange

    Requirements:

    https://learn.microsoft.com/en-us/exchange/manage-hybrid-exchange-recipients-with-management-tools

    Otherwise you can follow the steps listed in the first doc I linked but you will have manage recipients on-prem directly in AD or a 3rd party application ( again, not supported in that scenario unless you follow link two above)

    0 comments