Practical guides on SPF, DKIM, DMARC, and domain security. Learn how to protect your domain from email spoofing and meet the latest authentication requirements.
Your DMARC record exists but it's doing nothing. 95.8% of domains have DMARC, but only 49% enforce it. Learn how to move from p=none to p=reject with a detailed week-by-week roadmap.
Microsoft's January 2026 advisory reveals how attackers exploit misconfigured MX records and DMARC p=none to spoof emails from inside Office 365 tenants. Learn how to check if your domain is vulnerable and fix it.
Google, Yahoo, and now Microsoft require email authentication for bulk senders. Learn what's required, what happens if you don't comply, and a step-by-step compliance checklist.
Learn what DMARC is, how it works, the three policy types (none, quarantine, reject), how to set it up step by step, and why it's now mandatory for bulk email senders.
A practical guide to creating and configuring SPF records for your domain. Covers syntax, setup for Google Workspace and Microsoft 365, common errors, and testing.
Understand the differences between SPF, DKIM, and DMARC: what each protocol does, how they work together, which to set up first, and common misconceptions.
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