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SPF Checker

Validate your SPF record, count DNS lookups against the 10-lookup limit, and catch a permissive +all before spammers do.

  • No signup required — instant result
  • Plain-English issues, warnings, and fixes
  • Optional full report by email
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What this checks

SPF lists the servers allowed to send mail for your domain. This checker reads your v=spf1 TXT record, parses every mechanism, counts the DNS lookups it triggers (the RFC caps you at 10), and flags a permissive +all or a missing all mechanism.

Why it matters

Exceed 10 lookups and SPF silently fails — your legitimate mail starts failing authentication. A +all policy lets anyone send as your domain. This check catches both before they cost you deliverability.

More free checks

DMARC Checker

Analyze your DMARC record for policy, reporting, and alignment issues. Get a security grade and the fixes that move it.

DKIM Checker

Probe common selectors or check your own. Verify key strength, revocation, and test-mode flags across every signer.

Reputation Checker

See whether your domain or sending IP is on the blocklists that decide whether your mail lands or bounces.

Want this monitored automatically?

A one-time check is a snapshot. Email Watch ingests your DMARC reports daily, flags spoofing the day it appears, and tells you exactly what to fix — free for one domain.

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