You have a Microsoft 365 subscription that contains two users named User1 and User2.
User1 reports to have received a suspicious email message that appears to have come from User2.
You identify that the message was sent by an external user impersonating User2.
You need to block email that contains the email address of an impersonated sender.
What should you configure?

Question

You have a Microsoft 365 subscription that contains two users named User1 and User2.

User1 reports to have received a suspicious email message that appears to have come from User2.

You identify that the message was sent by an external user impersonating User2.

You need to block email that contains the email address of an impersonated sender.

What should you configure?

Kayode Omotosho · Accepted Answer

a Tenant Allow/Block Lists rule

Kayode Omotosho · Answer

an anti-phishing policy

Kayode Omotosho · Answer

an anti-spam policy

Kayode Omotosho · Answer

an Enhanced filtering rule

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