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 fanduel.com
Found
Selector: selector1
(TXT on selector1._domainkey.fanduel.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxgngqO+oxvVzeFn/TPHBHL7/WRprk6byyA5Y8hHTaIN8jR1TPbux4TbdI6CSshkQMT8T9ySohNtrDtw3PtPpdrHTACO7RkAm/r6TcABAQUYeUNkVXPlAXULWi0Uc/iDDG19+3u9AC9BpmIApXmbmz057mJ47JkrjMdgU90zORpNR0w7cnvtuUcZhBjSrxzkWJwWnX7dXZy5buqly0yuOQJxpW8O9RyK9TQZlrQvmgLEF1RnOtnXMS69+b3flMN1W8q1VFmvVbB7tB3xDYgE/XZj0CiDH7cipZMubeCaZtA53mEoEgF7xoDZ5Y00wN6aXhCVi0rqyykkBKundCmVhpQIDAQAB;
Selector: google
(TXT on google._domainkey.fanduel.com)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCCvlzjKIFkcLrujKPoSI9uLCyON1MTZa8P/uOEgtoXXH1tDTBQPHMTzG7cgOSNx0DSQBHxq8GImJve18KGeQCVSp2abSg9d67Bm2a8OEzKT4CY5kx+pRMVXSK5bfzSZvoPyl0OoLcD/3bkipvAl8uTVvrwX1SJ9pPN3K9MEwZLQwIDAQAB
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.