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 mytradelink.biz
Found
Selector: default
(TXT on default._domainkey.mytradelink.biz)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApsSJImt5+eKrFAsjTi4Vr2mbR49j3YhfSqqHo8beIysDHAMhEZi1chTSYb2lFV8Pc+V9lSTYAGB/eRWGBvManbokyOX9VfLIFRs8f2eNYIqOWSdI48chymkCS8aVLFzSQpM6vzggRsSsGLVnutonCCOrIps1Yy7c6IAEnyagny2OMr5mB3QYxgjNoVsBwcrMneO6H6oiwRPAQS17+Iyouq9MarMhNu3Fvxz+pgrlYFFhTimmzUlpv8DNM8u2/VxQkYyGrn+hTzpDPYQzFUlZ5io/dO+PNTFdo0ewoq9hc8C3PIoQBUvbqOlpdfXrHuXKC4FByz05JRu/i9xifwxuQwIDAQAB;
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.