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DNS Record Validator

Validate DNS records — A, MX, TXT, SPF, DKIM, DMARC syntax and coherence. Catch the missing SPF that tanks deliverability — local checks, free, no signup.

100% Local Browser Native

How to Use the DNS Record Validator

1. Paste DNS records

SPF, DKIM, DMARC, MX as published.

2. Validate coherence

Syntax plus cross-record consistency.

3. Fix and republish

Correct TTL-aware, then recheck propagation.

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Frequently Asked Questions

Why do my emails land in spam?

Missing SPF, misaligned DKIM, or absent DMARC policy are the top trio. Validate all three records — one gap poisons the set.

SPF lookup limits?

Ten DNS-query mechanisms maximum — nested includes burn through fast. Flatten vendors to cut lookups under the cap.

DMARC policy progression?

None (monitor) → quarantine → reject, over weeks with report review. Jumping straight to reject bounces legitimate mail on misconfigurations.

Is query data uploaded?

No — validation runs locally in your browser against pasted records. Nothing leaves your device.

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Last updated October 2026