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How to make changes to DL's created on Prem that are now being synced to EAC

Luiso, Carlo 20 Reputation points
2025-10-31T10:34:33.96+00:00

Hello,

We recently moved off of our hybrid solution in my firm and are now full Enta and EAC with AD on prem. I have DL's that were created in our hybrid environment that now cannot be modified.

We cannot make changes to allow outside access nor can we delete them from EAC. I can only delete them from AD on prem. Is there a way to administer these DL's? Sorry if this is to vauge, this is my first attempte at reaching out on this platform.

Best

Carlo

Exchange | Hybrid management
Exchange | Hybrid management
The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.
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  1. Andy David - MVP 159.7K Reputation points MVP Volunteer Moderator
    2025-10-31T10:39:53.2666667+00:00

    So you are still syncing from on-prem? If so, you have to keep an Exch Server on prem to manage or follow:

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

    Another option is to move the Source of Authority for those groups to Azure. This is a new feature that may not work for you, but check it out:

    https://learn.microsoft.com/en-us/entra/identity/hybrid/concept-source-of-authority-overview

    https://learn.microsoft.com/en-us/entra/identity/hybrid/how-to-group-source-of-authority-configure

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