Decommision- EdgeTransport Server (exchange 2016) in o365 Hybrid enviroment

Question

Hi, please guide me to decommission edge transport sever(exchange server 2016) in our exchange-hybrid environment.

Answer 1

Hi @ATFRMZ ,
You could follow the steps below:

1. Re-run the Hybrid Configuration Wizard to reconfigure my hybrid mail flow to use the Exchange 2016 Mailbox servers, instead of the Edge Transport server.
2. Updated inbound NAT for SMTP (TCP port 25) to point to the Exchange 2016 Mailbox server (made this change after running the HCW).
3. Sent some test messages and waited 24 hours, then confirmed with message tracking logs on the Edge Transport server that no new messages had traversed the Edge server.
4. Removed the Edge subscriptions.
5. Uninstall the Edge Transport server.
6. Shut down and decommissioned the VM.
   refer to: https://practical365.com/taking-edge-hybrid-configurations/
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