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 cnet.com
Found
Selector: selector1
(TXT on selector1._domainkey.cnet.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA+ZQOEWiqvWX3LoCdq1bV5WlXYy/ptizTQua2NNSQ4t+J9lBxXw1ZjmhYRwH3pjAuK4k1raYPVo5t24J1LuZ79gDb738yCZIVKXvDG2Wf8g3cYlr/HIUEEmJVIrRh/nxRujVH3f+c9R4PLKXVT0Z/BOVN0VLcrYI6b9x7Xn50P96itPYcFuN243VEK6QvCQe8KxVodcr8NBdDcGyDzfCvYEyUEmDj+WzC1zJqdb4uQBn4lOXicwiRiUOsuC2wbfsB5Bc8c7VxkV/IMmxxgummBxpA7X5mPX+0vhRBbJcDC93Cc6l6SfuLHtiNxSDu1e0z094c3XWxMq+HbvuVNQH9UQIDAQAB;
Selector: google
(TXT on google._domainkey.cnet.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnungWskPrXEPcYWvYwXaFLPE3lJWuOb4ydNbnp75u1I0PGcqXnCE2v3VxmRhJegG8eI0bNhKpk1lYYYMRz+fXZCyvoJM+C834/ik9jK/JdaLKpBz7Sz3pa0/1lbxJm1CLRKIB+2Ksdl23xHCvUV7TsNAnG4SjBiY1M8mipcTQvFTVJY8Y+N4VLhvyK27gnnhGUQHFb1QGXzQhV309tn1Ei7Z3qqjT4GeT7syZzfQ4SpKYwpRJkhsbw7huG9Fe+HUSYnCMc7Nlp7+exAr231QGZBppM3DOBHnfj+dmI1QURmY9ZttuT6DG+LuR36m8STEjpU5DYQpNQVTfapHDo2nNwIDAQAB
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.