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 nyspins.com
Found
Selector: google
(TXT on google._domainkey.nyspins.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAiIRfWBxoWJzRmNwzZExEDCBlMA4ytWPVdGUEr9MVZ1Yg9eOla1ImPC/fOfHLAsAdOYHmRfdfR4psbhu/d+LXDMQiEZZWIlFpAX/vi/TvEbcBlxiNUTpIm0ACsoZKohISm3twt1oj4noeQOAFiLn0xY9uwxC8Om0KZPYS7rJ+mQ5aiTBcqRxGAz0UyTMJOrGh1qCtgpkJBBp4i9nkBaYDpGtZCUS0K8dG4VDaVBSkvq4d4s18GnvlmNihpst6DxDYB2B1d7Pmo4QsBAPh6+x74U4J5mNsrcy3uFbpQf+QddNuWN9KHO5nvzwbFUZnh0g02yoY/gDryu2j05kwqPX0LQIDAQAB
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.