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 01908.biz
Found
Selector: default
(TXT on default._domainkey.01908.biz)
v=DKIM1; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAq2e/5UsjkUdQtnhTSYs1NF3mwnjXLSQiSRZR1T5kJQaQcIpV59pgamjPqbdVH/SgCDJfy54nqaNWS8HRMbg4jTE/0x21Pzz/8ZnRitascLcqOoRsOFSg/pgVpGRKwJaz/yERWzAQFoJXMZVsZKp3TYUyy5VnDs4chc73pZak9gKAUkjDsgu3D5f/NVg8cPM8Kn2dMuWXIs8HQnUGDEbkMs7itGVj4cZbS3z7jzQLfjTSi9dxO+8spJ8v+ovMQZ04dHcBYGp9vqhAVfvJaaBmj8g8QgdgsOXOk9oSGTNo169MSpYb80aUHCQ3fxVeVt5+z+uN6Tnv1/mB7fbm5Zgp7wIDAQAB;
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.