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MC394261: Option to automatically allow Spoofing and Impersonation related message directly using Admin Submissions

Today security administrators can use the Submissions page in the Microsoft 365 Defender portal to submit email messages, URLs, and attachments to Microsoft for scanning.

We are enhancing the email submission capability with an option to automatically allow Spoofing and Impersonation related emails from senders/infrastructure that were classified as legitimate by the admin, despite being initially blocked by the system. This will help mitigate false positives while the system continues to learn.

This message is associated with Microsoft 365 Roadmap ID 93366.

MC394261: Option to automatically allow Spoofing and Impersonation related message directly using Admin Submissions

When this will happen

This feature has started rolling out and the rollout will complete by late June 2022

How this will affect your organization

This enhances your ability to mitigate spoofing and impersonation related messages that you determine as False Positives.

You can tackle such False Positives easily while making admin submission by toggling “Allow emails with similar attributes.”

You can tackle such False Positives easily while making admin submission by toggling "Allow emails with similar attributes."

The allowed spoof sender domain pair entries will be created under Tenant allow block list – spoofing found at https://security.microsoft.com/tenantAllowBlockList.

The allowed impersonated domains or user entries will be created under the respective Anti Phishing Policy under https://security.microsoft.com/antiphishing.

Note: Expiry date and notes won’t apply to spoof and impersonation allows created from this process.

What you need to do to prepare

You need to be informed of this change so that you can leverage this capability.

Learn more

Message ID: MC394261
Published: 20 June 2022
Updated: 20 June 2022

Alex Lim is a certified IT Technical Support Architect with over 15 years of experience in designing, implementing, and troubleshooting complex IT systems and networks. He has worked for leading IT companies, such as Microsoft, IBM, and Cisco, providing technical support and solutions to clients across various industries and sectors. Alex has a bachelor’s degree in computer science from the National University of Singapore and a master’s degree in information security from the Massachusetts Institute of Technology. He is also the author of several best-selling books on IT technical support, such as The IT Technical Support Handbook and Troubleshooting IT Systems and Networks. Alex lives in Bandar, Johore, Malaysia with his wife and two chilrdren. You can reach him at [email protected] or follow him on Website | Twitter | Facebook

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