Remove last Exchange server from hybrid environment

Rohit Ghosalkar 0 Reputation points
2024-04-04T21:14:40.37+00:00

Hi,

We are Company of 10K mailboxes, and now we haves moved our mailboxes to Office 365, there are no mailboxes in on-prem Exchange. Just being used for Hybrid configuration and SMTP relay.

Now we are planning to remove the last server from our environment. We using about other Tool for on-prem SMTP relay which send emails to Office 365 server.

Now my Questions are

1: What are recommendations is such scenario, do we keep Single Exchange server ?

2: if we decide to remove last server then do we need to remove Dirsync as well? But we can’t remove Dirsync it is being used for Azure services.

3: what is process for removing the last Exchange server ?

4: What all things we need take care before removing the server ?

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  1. Thameur-BOURBITA 32,621 Reputation points
    2024-04-04T21:21:20.96+00:00

    Hi @Rohit Ghosalkar

    If you still have synced users from on-premise active directory you should keep at least one Exchange server to be able to edit Exchange attribute on on-premise active directory.

    For your information synced objects in Entra ID cannot be modified from Azure portal , you can modify it only from on-premise Exchange server or active directory.

    For more information please read this Microsoft article:

    Why you may not want to decommission Exchange servers from on-premises

    Please don't forget to accept helpful answer which helps users to know the answer solved the author's problem.

    1 person found this answer helpful.