Which email security protocol helps authenticate the sending domain and reduce email spoofing?

Options

  • A. FTP
  • B. DHCP
  • C. ARP
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

E. None of the above

Detailed Explanation

Correct Answer: None of the above

  • SPF specifies which servers are authorized to send email for a domain.
  • DKIM uses digital signatures to verify message integrity and domain association.
  • DMARC defines domain-based authentication and policy handling using SPF and DKIM.
  • None of these protocols appears among options A to D.