This e-book explains why DMARC compliance has become critical after Gmail and Yahoo mandated authentication for bulk senders. Email remains vital for marketing, transactions, and customer service, but lack of DMARC alignment exposes businesses to BEC scams and phishing. The guide details DMARC’s role in validating “From” domains using SPF and DKIM, its benefits for brand trust, reduced fraud, and improved deliverability. It outlines compliance requirements like DNS records, spam rate thresholds, and one-click unsubscribes, stressing that noncompliance leads to blocked or junked emails. Proofpoint offers hosted DMARC services and secure relay tools to simplify deployment and ensure business-critical email reaches intended recipients.

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