emails being sent are being blocked because they contain content identified as spam As(4810)

Keith Boyd 20 Reputation points
2026-10-22T03:50:51.37+00:00

All the emails I am trying to send are being rejected with the message: Message blocked because it contains content identified as spam. AS (4810)

Outlook | MacOS | New Outlook for Mac | For home
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Jeronimo Fuerte 48,530 Reputation points Independent Advisor
2026-10-22T04:27:32.8466667+00:00

To better understand your situation, could you please confirm whether you're sending from a personal @outlook.com, @hotmail.com, or another email provider such as Gmail? Also, does the error occur when sending a simple message containing only a few words, without attachments, links, or a signature, to a single recipient? Finally, when did the problem first appear, and were you previously able to send messages normally?

Please try sending the same simple message directly through your email provider's website, using https://outlook.live.com/mail/ if you have a Microsoft email account, or your provider's webmail service otherwise. If it is also rejected through the website, this would suggest that the problem is related to server-side filtering rather than the Outlook application itself.

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  1. Keith Boyd 20 Reputation points
    2026-10-22T06:45:24.6066667+00:00

    I have a MacBook Pro Laptop with Tahoe 26.5.1 Could this be an issue

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  2. Keith Boyd 20 Reputation points
    2026-10-22T06:11:14.96+00:00

    My address @outlook.com.au The error acurrs when sending a simple few words without attachments. The problem ocurred yesterday and preiously I have been able to send messages without any problem.

    I have tried to send a message with an attachment via outlook.live.com/mail and the message sent successfully.

    Thanks Jeronimo

    Now what do I do

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