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 astratrade.biz
Found
Selector: google
(TXT on google._domainkey.astratrade.biz)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxolCOeQLU5cIeHKuYiEevL6somDeIRB6VH5O/hTI0eZG95v8ukGSg71BLs8QOnJDSD+Nkg9GrK+/P+WaXoBiMDDDz7DfmMlb/Rw9nwnF7NDI7G/Iqux8RD+V/Sne5MCRec17HeA2oIch1BTm9zVwuqEF9A21RcYRTbQl6xLm7UVKEYIkCp2+bAcsFwsojqJoYIClnzIaM/rreeLN+iSuEf0eyO5VrYU7VHviwMd5J2oIQkT/mpJtuHJg+TEmjD6q/6HCDXpTVvuPhFkkULeZ7fJfR4MUPaf+Elve1JengdGe4YiRfPGaUtlDIDehUhj02pX5v7yRFwZRR+AVxhghsQIDAQAB
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.