RankAssurance
Learn · SPF

What Is an SPF Record, and Is Mine Valid?

SPF lists the servers allowed to send email for your domain. It's a single DNS record. A valid SPF record is one of the sender-authentication signals that keeps your mail — and your domain's reputation — trusted.

What "Good" Looks Like

One v=spf1 record that ends in -all (hard fail) or ~all (soft fail) is the healthy shape. Missing or malformed SPF is an absence we report plainly, never a guessed pass.

We show the meaning and our disclosed bands — never a secret weight or threshold.

Now check your own site

Run the Real Read.

Live check · runs on your site

Check SPF (Sender Authentication) on a Real Domain

Enter a domain and we'll run the real read — and tell you plainly if the signal isn't there or the page can't be reached.

A real, single-signal read through the same machinery the full scan uses. We report what we can measure and label what we can't.

Keep Reading

DMARC

What Is DMARC, and Does My Domain Have It?

DNSSEC

What Is DNSSEC, and Is My Domain Signed?

canonical tag

What Is a Canonical Tag, and Is Mine Set Right?

Run a full scan instead →See the Rank Codex