Microsoft 365 Messaging — Question 58

You have a Microsoft 365 subscription that uses Microsoft Exchange Online Protection (EOP) with the default settings

You need to ensure that email messages sent from the unauthorized IP addresses of any sending domain are marked as High confidence spam. The solution must minimize administrative effort.

What should you do?

Answer options

• A. Create a mail flow rule.
• B. For the default anti-spam inbound policy, set SPF record: hard fail to On.
• C. For the default anti-spam inbound policy, set Conditional Sender ID filtering: hard fail to On.
• D. For the default connection filter policy, add an entry to the IP Block List.

Correct answer: A

Explanation

Creating a mail flow rule is the most effective way to specifically target and mark emails from unauthorized IP addresses as High confidence spam with minimal administrative effort. The other options involve adjusting settings that do not directly address the requirement of marking specific emails as spam, and they require more complex configuration or do not meet the same level of specificity.