Anti-spam policy set to default is now all of a sudden quarantining internal users emails

Sunnyk-IT 5 Reputation points
2023-03-21T18:34:57.9+00:00

Hi All,

I have several users complaining that emails they have sent or received from some internal users are missing or sent to junk folder.

I haven't changed any policies in a while and this wasn't happening past a few days ago. Wondering if anyone can give any help or dealing with the same thing.

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  1. Carlos Solís Salazar 16,531 Reputation points
    2023-03-21T22:04:13.1533333+00:00

    Thank you for asking this question on the Microsoft Q&A Platform.

    First, you must determine the reason the emails were filtered as spam or quarantined:

    You can determine the reason by viewing the quarantined email in the Microsoft 365 Defender portal at https://security.microsoft.com. The portal provides detailed information about why an email was filtered as spam or quarantined.

    Knowing the reason, you can resolve any situation.

    If you can determine the reason, please share some screenshots of the quarantine emails.

    Hope this helps!

    Accept Answer and Upvote, if any of the above helped, this thread can help others in the community looking for remediation for similar issues.

    NOTE: To answer you as quickly as possible, please mention me in your reply.

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  2. Faery Fu-MSFT 16,836 Reputation points Microsoft Vendor
    2023-03-22T05:18:06.2066667+00:00

    Hi @Sunnyk-IT ,

    According to my search, I found a similar thread, the problem is caused by users configuring spam rules in the mobile mail application. Rules are only visible and active in this app, not in Outlook or Exchange.

    More details, see: All Internal emails are going in to Deleted\Junk folder and there are 'no rules' at all.

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

  3. Joël Schöni 0 Reputation points
    2023-08-11T06:30:10.06+00:00

    @Sunnyk-IT Any Update on this? Ihave the same problem

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