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ZeriFlow Journal

Security guides your team can ship this week

Actionable articles on TLS, headers, CSP, privacy, and practical hardening for modern web apps.

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Web Security

How to Set Up SPF, DKIM, and DMARC for Your Domain (Step by Step)

Mar 28, 2026·11 min

Missing email authentication records are one of the most common findings on security audits and the primary reason domains get spoofed for phishing. Setting up SPF, DKIM, and DMARC takes under an hour and dramatically reduces the risk of your domain being used in attacks.

#spf#dkim#dmarc
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