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Oulook Office 365 GPO safe senders list not working

David N 6 Reputation points
2022-11-08T14:53:21.417+00:00

We need to be able to update users safe senders list in Office 365 Outlook. This used to be able to manipulated by the following registry or GPO

https://support.microsoft.com/en-us/topic/how-to-deploy-junk-email-settings-such-as-the-safe-senders-list-by-using-group-policy-d17e49fb-af72-c796-6295-4da6d89ef5fa

But this does not exist in Office 365 version of outlook. Does anyone know how to append users to the list across the tenant?
I ran the powershell command and it updates the safe senders but only in OWA

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A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.
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Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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  1. David N 6 Reputation points
    2022-11-10T18:08:10.04+00:00

    I tried with cached and non cached mode.
    The only difference are these machines are on a VPN

    0 comments
  2. ChristyZhang-MSFT 22,336 Reputation points Microsoft Vendor
    2022-11-14T07:17:49.233+00:00

    Hi @David N ,

    Thanks for your reply!

    As i know, first GPO should be applied to Outlook client first, and then synchronized from client to OWA. According to your description, if you do not have additional operations and safe senders have been displayed in OWA normally, then it means that GPO has been applied on Outlook client. It's suggested that you could configure your account in other computers in your organization to check if there're any differences.

    If safe senders can be displayed in other computers, please create a new Outlook profile(Control Panel>Mail>Show Profiles>add) and check if safe senders can be shown.

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