SPF Checker

Fetch and parse the SPF record for any domain. We break down every mechanism, count the DNS lookups against the 10-lookup limit, read your 'all' policy, and flag the misconfigurations that quietly land your mail in spam.

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What is SPF?

Prove which servers can send as you.

SPF (Sender Policy Framework) is a TXT record listing the servers authorized to send mail for your domain. Receivers check it to fight spoofing — and a broken SPF quietly sinks your deliverability.

  1. 01

    Fetch the record

    We pull your v=spf1 TXT record from live DNS and reassemble it if it's split across multiple strings.

  2. 02

    Parse every mechanism

    include, a, mx, ip4, ip6, all — each is broken out with its qualifier so you can see exactly what's authorized.

  3. 03

    Flag the problems

    We count DNS lookups against the 10-lookup limit, check your 'all' policy, and warn on +all, deprecated ptr, and duplicate records.

FAQ

SPF records, answered.

SPF allows at most 10 mechanisms that trigger DNS lookups (include, a, mx, ptr, exists, redirect). Exceed it and strict receivers return a PermError, which can cause your mail to fail SPF entirely. Our checker counts them for you.
Keep going

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SPF is solid. Is your list?

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