Here is a clear, practical guide to implementing DMARC (Domain-based Message Authentication, Reporting & Conformance) for your domain. This includes the concepts, steps, sample DNS records, and best-practice rollout stages.

⭐ What Is DMARC?

DMARC is an email authentication standard that builds on SPF and DKIM to help:

• Prevent spoofing/phishing using your domain
• Improve deliverability
• Provide reporting so you can monitor who sends mail on your behalf

DMARC requires:

1. A valid SPF record
2. A valid DKIM record
3. A DMARC policy published in DNS

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