Wingtip Toys verified wingtiptoys.com in Microsoft 365 and now wants Exchange Online to receive mail for that domain. Which DNS records must be configured for mail delivery and anti-spoofing readiness?
Select an answer to reveal the explanation.
Short Explanation and Infographic
Mail won't land without an MX record — that's the address on the envelope. SPF/DKIM/DMARC are the bouncers that prove you can send as that domain.
Full explanation below image
Full Explanation
Correct Answer — B
Exchange Online needs MX for inbound mail and SPF (plus DKIM/DMARC) for authentication. A www CNAME is not mail routing. You don't A-record a single Exchange Online public IP. Autodiscover SRV/CNAME does not replace MX.
Exam tip: Verify domain first (often TXT), then MX for mail.