> Check any domain's SPF, DKIM and DMARC records for free: each record parsed, a plain-English verdict and how to fix what's wrong. No sign-up.

Source: https://vaartix.com/tools/email-auth-checker

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# SPF, DKIM and DMARC checker

Free · No sign-up · Nothing stored

Enter a domain to see its SPF, DKIM and DMARC records, what each one means, and how to fix anything that's wrong.

## Questions

**What do SPF, DKIM and DMARC do?**

SPF lists the servers allowed to send for your domain. DKIM signs every email so the receiver can check it came from you, unchanged. DMARC tells receivers what to do with email that fails both, and sends you reports. See the [glossary](https://vaartix.com/glossary/spf) for more.

**Why can't it find my DKIM key?**

A DKIM key lives at `<selector>._domainkey.yourdomain`, and selectors can't be listed, so the checker tries common ones (Google Workspace, Microsoft 365, Zoho, Vaartix and others). Find your selector in the `s=` tag of an email's DKIM-Signature header, and enter it above.

**What does "10 DNS lookups" mean for SPF?**

Receiving servers stop after 10 DNS lookups while checking SPF (RFC 7208), and treat the record as an error. Every `include:`, `a`, `mx`, `exists:` and `redirect=` counts, including inside the records you include.

**Do you store the domains I check?**

No. The check reads public DNS and the result is shown to you only. We keep an anonymous count of how many checks are run each day, nothing else. Checks are limited to 10 a minute per visitor.

**Is my email set up correctly if everything here is green?**

These records are the foundation, but delivery also depends on your sending reputation and content. Our [guide to avoiding spam](https://vaartix.com/docs/guides/avoid-spam/) covers the rest.

**Send with Vaartix.** A transactional email API built in India: SPF, DKIM and a return path on your domain are set up for you, and every feature is free during the private beta.

[Send with Vaartix](https://vaartix.com/#early-access)