What is DMARC?

DMARC (Domain-based Message Authentication, Reporting and Conformance) is a widely-accepted open standard that ensures only authorized senders can use your domain in the From: field of their email messages. DMARC builds on two earlier email authentication standards, SPF and DKIM.

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Related resources

Beyond The Basics: An Email Requirements Roundtable with Google, Yahoo and Valimail

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What is DKIM?

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What Is a DKIM Selector

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