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 greentrade.biz
Found
Selector: default
(TXT on default._domainkey.greentrade.biz)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArkcPQcpMt4xCZWWK5D4R/FqD3vLaVCRGXOJ9rYfEbCaVvv6BIkY9ldf1cfq0XdRvLo6C0z7XR1JdZTGbP7bOxK/UQ4FWu/WSQ1o74UcJtuN2T+uVsi8Eywq/H57dxGBgOQ/9eoG/hP8JayEuLxQ/4vILbsyp0amCbLJ/OH7ozzsCoEAd21G8vUs6wnnzSGTz8zxez89+E/svQMJK4d252MwJl7XJ+XPLWwC1noZYgDeX9mV+fj2e8YnAszhl9tBYLn2Li0d0aZi/B8gS141YDLy/+7ESUuRFn1WpfU7jli0L9kW8NCXpwi1Y+6vaf/V9yXDK/it51iHEH4Ov8wkB+wIDAQAB;
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.