Free DKIM Record Checker
Look up common DKIM selectors for a domain, parse DKIM TXT records, and verify whether public keys are published for email authentication.
Common use cases
- Confirm DKIM records after configuring a mail provider.
- Check common selectors while troubleshooting DKIM authentication failures.
- Review DKIM alongside SPF, DMARC, and MX records during email hardening.
Frequently asked questions
Where is a DKIM record published?
DKIM public keys are published as TXT records at selector._domainkey.example.com, where the selector is chosen by the sending mail provider.
Which selectors are checked?
By default NerdTools checks common selectors such as default, selector1, selector2, google, k1, s1, and s2.