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 lotto.is
Found
Selector: selector1
(TXT on selector1._domainkey.lotto.is)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCiJ4sorNSH+0bgU0KFTg50dK4u9AN/MvIrb/Kmfl/CWxTjP5EL7TdM79OmFm0JBFv3OfCgLq0d7W3RHP/2A5U9WpInklA07b1da/9sB95LkuUljbBvpz45xgDSQWMBOqJolV/DfXmFEzKM4FqxWEU3o+ae4nFnHQCfrV6zc4G9awIDAQAB;
Selector: selector2
(TXT on selector2._domainkey.lotto.is)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCU+hXX6G9YZJTbY9XZB2tskNp0OZKVIyFVb9Rnp3LgykezN3oTlepWhHuwg0YEDHEJ+ro51QI/09Twoz4rKhWB+OlwzxojF3rryMguZ2LqF7BygzWUL1XR2mD8JwvQ20y/MzAV/i8dHUtgNyr4Qs/Mmgr0cta/9UbJdTRKgTW4OwIDAQAB;
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.