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 surveymonkey.com
Found
Selector: selector1
(TXT on selector1._domainkey.surveymonkey.com)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCyN33nMeYBPywYDeXJC+Jbqm/9YEizvcAFX8KEHYx/UvdU8Iuv9WOSO8m4d0LzE+4X+wKcLNWsZrnliFu8gIyhk+nwlF4H3JfYt3tSN7xmBJDg2OrUj0U7c1Xpwkrizxv4d2sVPRmgdnGGA38YF1+de5VL6Oijy8v+3DNglzzEvwIDAQAB; n=1024,1450235947,1
Selector: google
(TXT on google._domainkey.surveymonkey.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuiSnB0s4GNpDv5HntZnkTVj0iC1xySVH1q7Bqjx10t1ltZNvKrvV/IgPtxDazC1fxsJm622Z+8AV4VtEKiKkG6wVSWmo/f3Pp1bkOINiGzUFX0OsgrnaiVoUHv80w9SR87UGHoHID+XT5CYkUq3FZTn8lnS/S9d/ClwCzlneLzCa9bk12oPSuId8y8AckyLlDhVkikRK+UYd4cRYIYLI/oxUa4Q1k+nK66/MPEdm6WDgg478D2/ZTEnYYDT8UhKt+mXivp7/I/eP0vi+uHNMu30BYIPTv92qBE40U/5S/EP6tzj/jFnJu8jsfQBptNKXQYho4QaPjpvDWAFIT1P6eQIDAQAB
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.