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 techcrunch.com
Found
Selector: selector1
(TXT on selector1._domainkey.techcrunch.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtlyvpaT7YUQjjINWZx7GURk0+v8nFVPWDqrjNI1mwBjLg+ATGDtOhMhegHXQawldPmMeD9GoSGPOGRqrII47eVtAp5ldN3Qgm+21gUAkNbxt9e5fpQoacvK8XFqDt07iCQGIZN8lHTY5qwSODcihXvMP11gvEosPH9mx2yV4nWhY/9X9t7jnr1Y4WniKdFA1hCvIacvvo+W7M1GrFeTKvNmHH5sUXG8NGKUapraPUeYPeK4udJgK2T1NN2MxR+f27JIjhhi9Fq62fVs9qlRvX9Spb7Upju/0XSI8ljg1sAw1q6ynu3ogLfmgC6d8JqjGEUc45KcbhbDAkYqLe2850QIDAQAB;
Selector: selector2
(TXT on selector2._domainkey.techcrunch.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA12dyX0ubKjDDPmLr7dniLMCDPIEvY/sYkdLRo5SBJV9IjsQcTolps3wLbg1BEmEAHiRIoxnIuN6II+9WYU1hc/YddPsbuaorBNx7S0vitKgIzJJ+kfh7aikYLS47hPnRLWZWbgS3dFgqpg2d5675ZzTJFuKmXnETbHf+ir6gt7fGPTSmnNcdtBnuqJEI31udDEjiBPgfKzs1RnyjRvl7ekRa8h33IfMxPgyxu3cDXE7GCiZXX+lUWhn3BKio9ct0pSAbRy2PVqLYvi2P6XR9ESnMj9zmWQjzMB5kBT7BEkZUoFX0ZDT8qsAhy1ZH5yyfwPtHD8pmSTuXTPK18BZReQIDAQAB;
Selector: google
(TXT on google._domainkey.techcrunch.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAlXE5lyXlodpKNgB4TAA6+mnjWnk4EPYlXFjWuJxtDRTF2Hi3+g+Yw2x15Qj1xWYvwWVWFQ/sDD8kalqNHBUrhbHu1BX/sT0FpT8AgW5O9A4ViLlYXUhJq9B0LA/5iF7A6KB5PbvX7WbgCvvKA2Wdtb+T6a05prd6HtqZtnBvy3NJzMxYoplcyGzr3XcqdZkTE1Zoi9TT4I22W+8H6Ng4D2J0XFgRiE53wdkRfiFppNZ1e6bf4TeMvlCZoPNXMc/O9p5K6bLRud4dfAMV26T35EDxBLH7LDq3amP52waW48erTayk831LU1Dm3PCfNdrbZ399/kLCoGGEigkD2f0BiwIDAQAB
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.