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 betfred.com
Found
Selector: selector1
(TXT on selector1._domainkey.betfred.com)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDdaWupahfo7orNzul588qa3PgI97N2LZiT7S65AWqhlL4KZysSvQyB+UQD+Owplh4AFEMThRTsTj+b+zGq51sRo1osXw0ruLO+A7YqZ9C3STCA92W9eB9uKpxj7spxu99Qc1Lg9LwCFwaDjWTsRmm5MmY3IsjPZNysw5rxeLNSMQIDAQAB; n=1024,1450506612,1466317812
Selector: selector2
(TXT on selector2._domainkey.betfred.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAzVLDDRfzcZNoGkYftR6kPCNpPscKoeoiseSHnk5HlAkhYKQnDmQziCQf+GkUWEtu7dbWQbLiyGl0oBrmFp1Mks/K83U5bQTwkRWAbepCoRuiaIxWSut97Eb3KTo3uUs4ZOvwxJTxW7qG+QM7gJ5qs4sEC/VuknNy6vEHYOKnSNIVQqeUILoQg/o154pEo9SQGdOCfIsQ62BAA2epngDK3K9j+ZXyAY8oy2RvrMS6Qjn28r1NE8v8Rwi5eJRDssdNfuM4t3bz/O0i5sqwS28lhkBdJbg4COZZ+3yPBALw7mnEUoArPAt78OHdt9LjdPyV+RpJeIW7f+6znHJA8heTEQIDAQAB;
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.