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Explain SPF, DKIM, and DMARC.
Explain SPF, DKIM, and DMARC. SPF lists allowed sending servers; DKIM signs the message; DMARC says what to do when checks fail. DMARC can tell receivers to quarantine or reject spoofed mail and send you reports. “Together they stop most email spoofing of a domain.” Without them, anyone can forge em
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What this card says
Short answer
SPF lists allowed sending servers; DKIM signs the message; DMARC says what to do when checks fail.
Example
DMARC can tell receivers to quarantine or reject spoofed mail and send you reports.
Say it in the interview
“Together they stop most email spoofing of a domain.”
Why it matters
Without them, anyone can forge email from your domain.
Learn more in the lesson: 47.7 OWASP / Web / Email Auth (SPF DKIM DMARC)