How can the SPF help in that task?

An engineer wants to configure a method to verify the authenticity of emails on Cisco ESA and noticed the Sender Policy Framework. How can the SPF help in that task?

Question:

How can the SPF help in that task?

Options:

SPF allows the sender to sign the email using pre-shared key

SPF allows the sender to sign the email using public key cryptography

SPF allows the owner of Internet domain to use DNS TXT record which machines are authorized to transmit email from that domain.

SPF allows the owner of an Internet domain to use DNS MX records to specify which machines are authorized to transmit email for that domain.

Correct Answer

The Correct Answer for this Question is

SPF allows the sender to sign the email using public key cryptography

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