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Controlled server processing

Free Online Email Authentication DNS Checker

Query real TXT records for SPF, DMARC and an entered DKIM selector using the configured Cloudflare resolver. Policy presence is not a deliverability or cryptographic verification result.

Inputs are sent to this server. Uploads are processed temporarily and not retained. Network diagnostics may query public resolvers or the destination website.

Result

How to use Email Authentication DNS Checker

Query real TXT records for SPF, DMARC and an entered DKIM selector using the configured Cloudflare resolver. Policy presence is not a deliverability or cryptographic verification result.

  1. Set Target.
  2. Set Selector.
  3. Run the tool, review the result and its stated limitations, then copy or download if needed.

Example & practical use

Query real TXT records for SPF, DMARC and an entered DKIM selector using the configured Cloudflare resolver. Policy presence is not a deliverability or cryptographic verification result. The example below demonstrates Target; Selector.

Example input:
{
  "target": "example.com",
  "selector": "default"
}
Result: Actual processed output or live service answers; values depend on the input and request time.

Features & result limitations

Query real TXT records for SPF, DMARC and an entered DKIM selector using the configured Cloudflare resolver. Policy presence is not a deliverability or cryptographic verification result.

Frequently asked questions

What inputs does Email Authentication DNS Checker accept?

Target; Selector

How should I interpret the Email Authentication DNS Checker result?

Query real TXT records for SPF, DMARC and an entered DKIM selector using the configured Cloudflare resolver. Policy presence is not a deliverability or cryptographic verification result.

Where does Email Authentication DNS Checker process my data?

Inputs are processed on this server. Uploads use temporary files removed at request end. Public diagnostics contact the named resolvers or website. Private text is not stored in usage counters.