Email Security - CompTIA Security+ SY0-701 - 4.5
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- čas přidán 5. 12. 2023
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Professor Messer’s Course Notes: professormesser.link/701notes
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We rely on email as one of our most common methods of communication. In this video, you'll learn about SPF (Secure Policy Framework), DKIM (Domain Keys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting, and Conformance).
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This is the most concise, clear, and easy to follow overview of these email security elements I've seen to date. Thank you for making this video!
I totally agree, I've read multiple explanations of the same topics and struggled to understand but this really puts it together.
Thank you professor Messer
Why would validation fail with SPF or DKIM if DMARC would work? Is one superior?
I am no expert, so bear with me. DMARC itself does not validate the source of the email against anything (like the DNS records or key pairs). It only comes into play if the email fails the validate its source. Then the DMARC gives instructions to the mail server on what to do with the email next. SPF and DKIM say yes or no to verify source, then if 'no', DMARC tells email to go in timeout or whatever is configured.
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