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 topnotchtrades.biz
Found
Selector: google
(TXT on google._domainkey.topnotchtrades.biz)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx4ig/yu0JGa4KBw25VMd90YVr8LKaYOTsE9QQ2uM0sOYpwTHzFSllEtYQAxkmo6UkcMJ8/4dsvLRR18IrosR0g5q1k/9dagGA7oYNdsJGBFTtgxOHM9ciwzInqvoaIvE7lPa6V0aepDxHk3cC7U3hc45zse5PjH5w0vQcXbSyGgzLh8XzVN4rAzClIsrEO3N4kQAtt3yVj2uP+5BXZ9KM0izgW5CrYHpozw29uEc4T+3+fU/NWl95d5ZgPUQ589G/vUiLWqqtkTP5JKTO5vqQW3mG5LjXF+y6b312eY+vOqtxoQB9yL6c6eM5w63JdPkJLzDE/evR3Zvz5fxiwTyewIDAQAB
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.