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 yelp.com
Found
Selector: google
(TXT on google._domainkey.yelp.com)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCIMbonjCXuvp+kA4zRLwaIZo5XPk2BdKfKvcnQvLv9M8B+JZ5CYybQlsZSJL8D097zPCr5QAfg8R5Zc/XwQmrkj7V/bx6fP5e/nsRBOL2y8kWrI+4BVwvjpHg8Rq8qmHp8nbQcCq3uswLJ/t1Y+dihO+6+WGLdoMvMKZm7MGfauwIDAQAB
Selector: mail
(TXT on mail._domainkey.yelp.com)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQChwjAtKSrPDGvMfHExH0dpGwAtYfoG4phx6yZ8IQOR2o5lyDVJRM8px7P/hXy46A1vVvhj1T5+bVnQFdZgzesstEmjERMR+SBXPbGDDKzcoSrICPGxFkTSME5dX953DYz9doqlI/DJ6nd2Bi64kRNHMAM3lNP2Vz+8m7rVB05J/QIDAQAB
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.