DKIM Record Checker

DKIM signs outgoing emails. Receivers verify the signature using a public key in DNS.

DKIM lives on <selector>._domainkey.<domain>. If selector is empty, we try common ones.

Result for thedailybeast.com

Found
Selector: selector1 (TXT on selector1._domainkey.thedailybeast.com)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC/ve1smqbp0CCpDR/ZSGP0FT6pGN4p8N/DlMbK3K+jsO0UzU5iHqRwulweji2BOJpgHSwYbBwq2kKC1S+YwUwOTDL24bDUDH9q9lM6s6ET7D+9+5nnMFpEHNC5dUijHuIMCSHamzUpkL7POwsFsjjIjXD53EmUglH6hfSfTzn+vwIDAQAB; n=1024,1457561517,1473459117
Selector: google (TXT on google._domainkey.thedailybeast.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzRtHLu6GfrHg0oxHal1cnRQ4zHteaifkPBhfFhu7SORU6AdYZlw2pL3Ibbmhx8arKlj3PJOo14cibTNvEgB3AI1afeN5jHx7VlhHWykbc6iKiqhFqlKuVsRQ+pAvdqN16dQIfTJZUlejIVrZAxkDhsGaT9GS7sWFI08WpfGqB0DZv2xT3Ltmo8Uy/ZC1sFCBRtSXEyVCJ7qHDeEH6LqvrqNl6Wlpx6EgIfRVygzP8qFZxhaNiR4RLi1NJ7l7MI4rbJj4zZfUwXF+heW7ZcmKGdPcI/vytlurl6IHzfjh8nUnVvxW270yzNwaLTITm5ofdLUeKGlcLv3glPuOBA2StQIDAQAB

FAQ

Why does DKIM require a selector?
Selectors allow rotating keys and running multiple keys per domain.
Where is DKIM published?
TXT on <selector>._domainkey.<domain>.
DKIM record exists but emails still fail DKIM?
Signing may be disabled or the selector used in email differs from DNS.
Do I need DKIM if I have SPF?
Yes, many providers use both for best deliverability and DMARC alignment.
Can I have multiple DKIM selectors?
Yes, that is common for key rotation or multiple senders.

What is DKIM?

DKIM (DomainKeys Identified Mail) adds a cryptographic signature to outgoing emails. DNS stores a public key that allows receivers to verify authenticity.

Example

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0B...

Common mistakes

  • Wrong selector (the record exists but under a different selector).
  • Key is split incorrectly across multiple TXT chunks (some DNS UIs break it).
  • Publishing DKIM but not enabling signing on the mail provider.