Understand the result before changing DNS.

These guides explain the public email-authentication basics, keep the claims narrow, and put safe sequencing ahead of quick fixes.

Start here

How to check SPF and DMARC

Learn what a public presence check tells you, what it cannot prove, and how to interpret the basic result.

Read how to check spf and dmarc

DMARC result

No DMARC record found

Understand the gap, the three DMARC policy levels, and a cautious sequence for adding protection.

Read no dmarc record found

SPF result

No SPF record found

See what the result means, why sender inventory comes first, and which common SPF mistakes to avoid.

Read no spf record found

How these guides are written

Useful boundaries, not false certainty.

A public DNS check can show whether a record is visible. It cannot inspect every sender, prove alignment, guarantee delivery, or safely design a replacement record without knowing the domain’s real mail flow.

The technical explanations are grounded in the published IETF standards for SPF and DMARC.

Check the public baseline in about 30 seconds.

No account, no email address, and no DNS changes.

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