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w4C777's avatar
w4C777
Copper Contributor
Dec 31, 2023

Blocked senders are being filtered as spam

I have explicitly entered an email address to be blocked in Microsoft Defender Anti-spam Inbound Policy in Blocked Senders, however, mail from this email address is being filtered as spam. Why aren't messages from this email address being blocked and rejected? Instead, they are being filtered as Spam and being delivered according to the spam message action. I don't want emails that are listed in Blocked Senders to be delivered anywhere. What is it about "Blocked" that Microsoft doesn't understand? To me, "Blocked" has always meant block. Period. Is there a way for me to handle these emails the way I define "Blocked?"

5 Replies

  • w4C777's avatar
    w4C777
    Copper Contributor
    I am still faced with this issue and would like someone to please help me.
  • w4C777's avatar
    w4C777
    Copper Contributor

    I still would appreciate help from somone on this. I removed the email addresses from the Anti-spam Inbound Policy in Blocked Senders and added them to the Tenant Block List. However, they are still being treated as Spam. Why is this happening? I just want them blocked and not sent anywhere and I can't seem to find a way to do that. How do I set it up so that these addresses an totally blocked and rejected?

    • w4C777's avatar
      w4C777
      Copper Contributor

      What does that cmdlet have to do with incoming email from an address externally from the organization? Isn't this for showing senders within the organization?