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 nba.com
Found
Selector: selector1
(TXT on selector1._domainkey.nba.com)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDGl5wbLoIEr7yC2lH6B57eipY6cvevfAdS2Zq0Z3R1h4IZFzqrJ4fLqMHCM+IjNa+QwjYvJkdu5n5SnRuaXb1myWk7NWqvy/YX7ZQJTjuK5+/MrTADyXokdTzBMPpJBjKRQMN4K86rYkE5T866j83/aIkskRA+w3CK0IezEuQglQIDAQAB; n=1024,1448964369,1464775569
Selector: selector2
(TXT on selector2._domainkey.nba.com)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDCfBWPacBq3DDlf5tpKSXY9OH0WOF0fKTaVg4OuPkaywdsvOyi5m2ja6lP2ah7+WeAoK4ldGZclyvXk2KuvkHR/3RwfNzr6VGoA7euwM5X0F09qRt1/l7RL3DB+lTt2/usvgpNNsfcX3zL5Kug7QSL6Hr3zIKuU2g2O5VnVwRO2wIDAQAB; n=1024,1448964370,1
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.