Outlook.com Blocked Domains feature not working

It seems that your current setup in Outlook.com is not effectively blocking emails from the domain shcms.org as intended. Here are some options you can consider:

1. Review the Rule: Ensure that the rule you created is set up correctly. Sometimes, rules may not trigger as expected if there are conflicting rules or if the conditions are not specific enough.
2. Use Blocked Senders List: Since you have already added shcms.org to your Blocked Senders and Domains list, this should ideally prevent emails from that domain from reaching your inbox or junk folder. However, if this is not working, you might want to remove and re-add the domain to see if that resolves the issue.
3. Check Anti-Spam Settings: Sometimes, the anti-spam settings may interfere with your rules. You can check the junk email settings to ensure that they are configured to respect your blocked senders list.
4. Tenant Allow/Block List: If you are an admin or have access to the Microsoft Defender portal, consider using the Tenant Allow/Block List feature to block the domain at a higher level. This is a more robust method for blocking unwanted emails and can prevent messages from being delivered altogether.
5. Contact Support: If the issue persists, it may be beneficial to contact Microsoft support for further assistance, as there may be a technical issue affecting your account.

By following these steps, you should be able to improve the effectiveness of your email blocking settings.

References:

• Create sender blocklists for cloud mailboxes
• Allow or block email using the Tenant Allow/Block List

Thanks for sharing the details, Royden! Try to change the Rule Condition — use "From" → ******@domain.com" instead of “Sender’s address contains”

Outlook.com’s “Sender’s address contains” often fails because:

• Many spam messages use display names or “via” senders
• The actual envelope-from domain can differ

Working version:

• Go to Settings → Mail → Rules
• Edit your rule
• Use: Condition: *From → Contains → @shcms.org
• Action: Delete (not “Move to Deleted Items”)
• Move this rule to the top of the rule list

This makes Outlook check the real "From" header and not the misleading sender field.

See if this helps. If you need further assistance just let me know.

Best regards,

Kimberly