The mandates driving DMARC adoption
Card networks, mailbox providers, insurers, and EU regulators all now weigh email authentication. These guides explain exactly what each mandate says — no overclaiming — with deadlines, penalties, and a checklist to get compliant.
PCI DSS v4.0.1
PCI DSS v4.0.1 Requirement 5.4.1 has mandated anti-phishing mechanisms since March 31, 2025. What the requirement says, the fine schedule, and how DMARC, SPF, and DKIM help you meet it.
Google, Yahoo & Microsoft sender rules
Gmail, Yahoo, and Outlook now reject bulk mail that fails authentication. The 5,000/day threshold, DMARC alignment, one-click unsubscribe, the 0.3% spam-rate cap, and Microsoft's 550 5.7.515 rejections — with a compliance checklist.
Cyber insurance
Cyber-insurance applications increasingly ask about DMARC, SPF, and DKIM. Which carriers ask, why email compromise drives roughly half of claims, and how to get your domain enforcement-ready before renewal.
NIS2 Directive
NIS2 requires essential and important entities to secure their communications, with fines up to €10M or 2% of global turnover. What Article 21 says, where DMARC fits per ENISA guidance, and how to prepare for supervision.
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