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?

A. DNS

B. S/MIME

C. SPF

D. SSID








 

Suggested Answer: B

Community Answer: C

Reference:
https://en.wikipedia.org/wiki/S/MIME

This question is in 220-1001: CompTIA A+ Certification Exam: Core 1
For getting CompTIA A+ Certificate


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