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 1000miles.biz
Found
Selector: selector1
(TXT on selector1._domainkey.1000miles.biz)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAttusbqU1IHHKw1V2A8bjgsg7qGKkEhPOkQwaGd0JhcdhUGmCzb0/Hs8SD9ZO9VoEuWm3S+GMg08gV4OBoHmJVnOARy4eG7Q+mhcH6NmjcQtpZuw3xuSIhsyxiAzwR/Rz1gaqgHKsiDVxvttodITYy+puDEysJwo3c7B5KlEHEd3y1rSShhe+8tisvv1gvVc9TPBgpJSPZupD7sOqUoe6DEHxzRYsIt0mj4j78o5MsbhWWiqRVBahWLv6F+WLEkow1Umx4U1rJ0O2QN1iYdAo/s31L6ST1ksuvZDnw8dql3dcj2g5KIk/wlm4PpECsv2n+tLHyp5gSUX0w6raVcWT2QIDAQAB;
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.