Enable Users To Block Senders In the Defender Portal

TempStar 50 Reputation points
2024-04-24T17:02:27.45+00:00

Recently staff have lost the ability to block senders via the quarantine@messaging.microsoft.com email that is sent to their inboxes.

User's image This option is also greyed out in the defender portal for them as well.

User's image We have a policy in place that is supposed to allow this action so it is not clear as to why this is not available.

User's image

I did find an article stating that MS is taking this away by default however creating a policy should allow this i would think. I am looking for feedback on anything i may have missed.

Thank you in advance.

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  1. Bruce Jing-MSFT 1,995 Reputation points Microsoft Vendor
    2024-04-25T11:09:55.08+00:00

    Hi,

    I checked the official Microsoft documentation and it is recommended to create a new quarantine policy if the NotificationsEnable Policy is not in effect. You can refer to this URL for the exact steps:

    Quarantine policies - Microsoft Defender for Office 365 | Microsoft Learn.

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  2. Evandro Amaro 0 Reputation points
    2024-05-27T14:17:40.27+00:00

    Hello everyone. I too am having the same exact issue.

    User's image

    User's image

    The notification policy allows users to Block sender

    I have disabled this policy and re-enabled it 2 weeks ago. I had to to other stuff in the meantime. While getting back to this topic I checked again and still the same. The screenshot above is from today.

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