Delivery has failed - Message blocked because it contains content identified as spam

Hannah Baumber 41 Reputation points
2022-03-08T12:20:25.31+00:00

Hi,

Only recently, I've started having issues replying to emails where delivery fails.

It says:

Delivery has failed to these recipients or groups:
Remote Server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)

This is when I've been replying to group emails. Each recipient has a different email provider and I'm only adding plain text to my replies. It appears to be an issue with the contents of the email trail that they sent to me and the other recipients in the first place.

Please help as this is a real hindrance.

Many thanks,
Hannah

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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Accepted answer
  1. Andy David - MVP 153.5K Reputation points MVP
    2022-03-08T13:09:41.367+00:00

    The easiest way is directly from your account in the web interface.
    Go to help, then at the bottom of the menu: "Still need help?"

    180969-image.png

    Click on the YES button

    that goes to here:

    180978-image.png


4 additional answers

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  1. 𝔽ℝ𝔸𝕂 β€Žβ€Ž 6 Reputation points
    2022-12-14T19:28:25.84+00:00

    This has been happening to me recently for every recipient making my account useless.
    I would receive an email on my @Karima ben .com account. When I respond to it, I would get the error message saying that it was blocked:

    Remote Server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'

    This would happen even when responding to people I have been corresponding with before and even on the same thread.

    @David XX 's workaround worked for me so thanks for that David!

    1 person found this answer helpful.
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  2. Andy David - MVP 153.5K Reputation points MVP
    2022-03-08T12:25:55.34+00:00

    Unfortunately, there isnt much you can do :(
    The recipients are blocking these and only they can tell you why:
    Remote Server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)

    Others have seen this as well occasionally:

    https://support.google.com/mail/thread/101655526/emails-being-rejected-by-the-recipient-s-email-provider-as-spam?hl=en


  3. Andy David - MVP 153.5K Reputation points MVP
    2022-03-08T12:48:45.047+00:00

    Ok, in that case, your only real option is to open a ticket with hotmail.

    You could also try asking here:

    https://answers.microsoft.com/en-us/outlook_com/forum/oemail


  4. Ralph Powell 0 Reputation points
    2023-04-10T05:10:02.6133333+00:00

    Happening also to me. Even from my own email to myself. Something wrong with MS email

    0 comments No comments

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