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 103more.biz
Found
Selector: default
(TXT on default._domainkey.103more.biz)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAlCOIufkXDL9FvCQSRWK/4wNO77LP9xmQhINt9/k8N9E6Rq1KOXnpKMM8JGa2TM9Y2j345/N+qNJdzNx/hoe6c0J5tv4oqvEIlv3zsid3cCC9833eoMPVeK7zn6Ou4Y/CDkvVx0mGkp5jmY2GRpXtJfbGDeN172uompcMaHWuLhDy1RF1vluddlYd48ylqvTivorNiwuAMPll54YOgygpv4O0Yv9QjMY4rdb0cSDp0nWbFWea2We2bWklKO6sHFEMVDzWWay1EmSWZ6CJOwRxv3/OZ/5oKRRIYJnni1d/lvhDKS8613tuBMCTqyxz73QbcszMSjnM5cRFpzjVuKBIdwIDAQAB
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.