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 tradesecrets.biz
Found
Selector: mail
(TXT on mail._domainkey.tradesecrets.biz)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2Aa1dFWUWv8F1frX7/nm5eH9VwkUoitLige9V9t//gNsIsX7eWu1jwHAwrTaI6vXegfBlzRoyBgpCrPt9vT+o7Uk2M+ljbJCzQboyKUg2guPj+ym8QAREH43t/9iabur4mIwfXLR7MYihdipB71Q1o8G2bSHeHB6MrAFNT9GmL34FFWW9r9E76rlq9kburIf67gjIO0bnY+UWaLFDfzErEv26Ft3I+1J03r2/4VgiHCc+vogFIQwJ1ShMOaZZXHRGcknsoCnugHF7/DyoCusMs7ZoD26NkFi7+tgU+irB4RvIg7fESUfP9k04EOfBOfMKo9XaXOSa49G7AgyG6vNDQIDAQAB
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.