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 atg.se
Found
Selector: selector1
(TXT on selector1._domainkey.atg.se)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnop3IQmWjDQg70WwUCXeUSHZnP44XWPwMNk4Uxi52uJn2AlDT9rGkFRd7nneiONKZzqMJeWvsJewVUQ3sSXUqbxKri+AnHLhWe5b8g0dbFbJlhATH7SowaIt1EhzPMsNKFSo+Nw5pbbpGHklT36OdEKgMOL5sXdYdpLnlL072jyHg+q/dOJIai6C7cWcCk+uWJEafnhsTm8W+DR6tpbvZ4nXcMRKUL9dN9BRY0A9NosYGrBpnLqbNeymohjfZHF9+XC64brisAfH/mjIIXaAvItkzSwxBP2WInTfC8NDeguvCYA0KXqjK4HXyt5RXJfBRDiXj4db0EoagFbgFja8IQIDAQAB;
Selector: selector2
(TXT on selector2._domainkey.atg.se)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2dzS60DPRjdV5mopNuEzN2BliowNfOgQCeyWjeYCW8hu3zEAVF4w8RUD98SHMRtiIhhhq25ed4Vuu+1kozLQrHXKI2DIXsxpXUJbJR3oCExD2+RGU9StSGjgdrrBqwhZ5t86qiYeroYPpAeu4qIms8p/7TNflE4q2QbK1X/6vnYw2ePHV3KhAHyRzyqChhP96SsrOonaQ/7HtPbmfR1WZZ1V0KDy2qDvirlv2pv0hSIpz4iSaFHkNzESiBCPzzJEW8242zJ4rT1UsTcPSwiAWR1AZ+qiLdzActZNzZwWelxlMnFuk7DSckIJIdMcJ1NAg8br1Ar3wKp8tnfqwkRhSQIDAQAB;
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.