CompTIA A+ Core 1 (220-1101) — Question 111

An organization keeps receiving spam that appears to come from its own domain. No accounts have been compromised. Which of the following will BEST mitigate this issue?

Answer options

• A. DNS
• B. S/MIME
• C. SPF
• D. SSID

Correct answer: C

Explanation

The best way to mitigate the issue of spam appearing to come from the organization's own domain is through SPF (Sender Policy Framework), which helps verify that emails are sent from authorized servers. DNS, S/MIME, and SSID do not specifically address the problem of preventing spoofing of the domain, making them less effective in this scenario.