DMARC Checker
What authentication policy and reporting settings does this domain publish?
Use it when you need to find a DMARC record or understand its policy and alignment settings.
Open checkerSimple, focused lookups
Free Email DNS Tools
Check four related parts of Email DNS without an account, dashboard, or setup flow. Start with the question you need to answer—you do not have to run every check.
SPF Checker
Which senders can match the domain’s published SPF policy?
Use it to inspect a published SPF record, its mechanisms, qualifiers, and final all policy.
Open checkerDKIM Checker
Does an exact selector publish a usable signing public key?
Use it to validate a DKIM key record and identify revoked, weak, or malformed public keys.
Open checkerMX Lookup
Which mail servers does DNS list for incoming mail?
Use it to review explicit MX servers, their priorities, or an intentional Null MX result.
Open checkerChoose by question
Four records, four different answers
MX shows where incoming mail goes. SPF shows which sending sources are authorized. DKIM checks whether one selector publishes a usable signing public key. DMARC shows how authenticated SPF or DKIM domains align with the visible From domain and what policy applies. One result does not prove the others are configured correctly.