DMARC (Domain-based Message Authentication, Reporting, and Conformance)

What is DMARC?

DMARC (Domain-based Message Authentication, Reporting, and Conformance) is an email authentication protocol that helps protect your email domain from spoofing and phishing attacks. It works alongside SPF and DKIM to verify that emails sent from your domain are legitimate.

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Why is DMARC Important?

DMARC is crucial for:

• Preventing Spoofing: Stops attackers from impersonating your domain.
• Improving Deliverability: Ensures your emails reach inboxes instead of spam folders.
• Providing Visibility: Generates reports to show who is sending emails on your behalf.

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How Can I Use DMARC?

1. Set Up Sender Policy Framework (SPF) and DomainKeys Identified Mail (DKIM): DMARC relies on these protocols to authenticate emails.
2. Publish a DMARC Record: Add a DMARC record to your Domain Name System (DNS) settings.
3. Monitor Reports: Use DMARC reports to identify and block unauthorized senders.

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Brief History of DMARC

DMARC was introduced in 2012 by a coalition of companies, including Google, Microsoft, and Yahoo, to combat email fraud. It has since become a standard for email security, helping businesses protect their domains and improve email deliverability.

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Related Terms

DKIM

SPF

Email opt in

SMTP

Email unsubscribe