Free tools/correo dns

SPF, DKIM and DMARC checker

Queries public DNS (Cloudflare DoH) for missing records, permissive ~all and DMARC p=none.

Reads published TXT records for SPF, DMARC and common DKIM selectors.

Does not send test mail or change DNS.

Need a real intrusion test?

It is performed under contract and written authorization.