Microsoft 365 Messaging — Question 90

You have a Microsoft Exchange Online tenant that has an email domain named contoso.com. Contoso.com routes all inbound email messages through a third-party email protection service.

You discover that all the inbound email messages contain the source IP address of the email protection service.

You need to ensure that all the inbound email messages retain the source IP address of the original sender.

What should you do?

Answer options

• A. Modify the SPF TXT record of contoso.com.
• B. Enable Enhanced Filtering for Connectors.
• C. Configure a mail flow rule.
• D. Add an entry for a spoofed sender to Tenant Allow/Block Lists.

Correct answer: B

Explanation

The correct answer is B, as enabling Enhanced Filtering for Connectors allows the original sender's IP address to be preserved in the email headers. Option A is incorrect because modifying the SPF record does not affect IP retention; it's for sender validation. Option C does not address IP retention, and option D is irrelevant as it deals with spoofed sender management rather than IP address preservation.