Expand user impersonation to 350 protected users instead of 60 within anti-phishing policy

The number of protected users limit is being expanded to 350 instead of 60 within Anti-Phishing policy

This message is associated with Microsoft 365 Roadmap ID 81981

When this will happen:

We expect the rollout to begin at the end of May 2021 and expect the rollout to be fully complete by the end of first week of June 2021.

How this will affect your organization:

Once available, within Anti-Phishing policy, in the Users to protect section, you will be able to specify up to 350 users (per policy). This means you will be able to specify more users to be protected. As it does today, the user impersonation protection will continue to prevent the specified internal or external email addresses from being impersonated as message senders. More information can be found here.

What you need to do to prepare:

You may consider updating your training and documentation as appropriate.

Message ID: MC257241

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I've been working with Microsoft Technologies over the last ten years, mainly focused on creating collaboration and productivity solutions that drive the adoption of Microsoft Modern Workplace.

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