SPF (Sender Policy Framework), DKIM, DMARC (Together)
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In combination, SPF, DKIM, and DMARC form the technical backbone of a trusted email-sending environment.
- SPF: Specifies which IPs are authorized to send on behalf of your domain.
- DKIM: Cryptographically signs outgoing messages, enabling receivers to validate authenticity.
- DMARC: Uses SPF and DKIM results to instruct receivers on how to handle unauthenticated emails and provides reporting.
- Outcome: Stronger brand protection, fewer spoofed emails, and a more favorable reputation with mailbox providers.
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