28 Aug 2026DMARC Explained: What p=none, quarantine and reject Actually DoDMARC is the part that actually stops domain spoofing — but only once you move past p=none. Here is what each policy does and how to get there safely.Read article →BITCOPS learn
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28 Aug 2026DMARC Explained: What p=none, quarantine and reject Actually DoDMARC is the part that actually stops domain spoofing — but only once you move past p=none. Here is what each policy does and how to get there safely.Read article →
25 Aug 2026DKIM Explained: How to Find, Read and Check a DKIM RecordDKIM is the only part of email authentication that survives forwarding. Here is how selectors work, how to find yours, and what the record actually contains.Read article →
25 Aug 2026What Is an SPF Record? How to Read and Fix YoursSPF is a single line of DNS text that decides whether your email looks legitimate. Most broken records fail for the same three reasons — here is how to read yours and fix it.Read article →
25 Aug 2026HTTP Security Headers Explained: What They Do and How to Read Your OwnHTTP security headers are the cheapest hardening available: no code changes, just a few lines of server config. Here is what each one does, what a sensible baseline looks like, and what they cannot protect you from.Read article →