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 alemanne.info
Found
Selector: default
(TXT on default._domainkey.alemanne.info)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnT0Jg+7Z8o66sfgGMqaKCO39uDiot/QS1I7kYNVNNtMWFvngCgql0WsemZjH6RAZBFn93p+SY8jd+g+MNUsnM5qTFUvfPDPV3hFw+2m3zPpHxwlTjTfmalnD0tynvEp5J+GvWpDeXWBkJjI3IOuLQxxnifGIZgrhv5AJjkYbAMIho/211zEz+b4G2XhM89UKGjWkVyK8Ujb+3EH88NyWpSPPf1SoehBRdySqraTdWpemhDNh/V9gv+R2ODus8gm0cgaGw7nRs8if828WXf2D+G0e6maDoLg/hpudGpWFiL5q13jsVG/VWviwoSxmxTnpkMv/9QoMLqvC5/jxhamzAQIDAQAB
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.