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SPF

What is SPF?

A plain-English guide to SPF (Sender Policy Framework): what it is, why it matters for protecting your domain from email impersonation, and why it needs ongoing monitoring.

18 Jun 2026 65

Fixing SPF too many lookups

If your SPF record uses more than 10 DNS lookups, receivers treat it as broken and even genuine mail can fail. This guide shows you how to see where your lookups are going and fix it, either by trimming the record yourself or letting DMARCER's Hosted SPF Flattening handle it for you.

3 Jul 2026 53

Hosted SPF: flatten and host your SPF

Hosted SPF (also called SPF flattening) lets DMARCER host your SPF record so receivers only ever see one DNS lookup, keeping you safely under SPF's 10-lookup limit. This guide walks you through turning it on, managing a live domain and reverting if you ever need to.

29 Jun 2026 43