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 duelz.com
Found
Selector: google
(TXT on google._domainkey.duelz.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtyUqhH9hsFUB0NZ8hn8Pmx6mOs5LFxiOXSqbMjJ1Ru3Ag5NvNcmkFc8weTMq8gxfAKnMF6GVZufV1XQagdQL2W9Y9VcdEBTCfDbYoGkZq1ELBxqr8bPLLp8C923Y8Qfc/fFB9XeBSa8vu/hweWNN0n7+p1T64X5jb7o3mj0xjynx55fNqQfBpV8o0hrd9XJPud8/NlqK9tsT0PBZLu+6HumLdJ5MgCqwYPNEnbAyj37/z4RX8QeNAKQMbD1jVyRR5zdEfc+in1h1Z4wQASo3F2GnvG0/CdxYQ2SmfWakHXi+ePwSr0VBdX9/8dy1bvibT0TTyIv2wYZ7AIL6XaEuSwIDAQAB
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.