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 norton.com
Found
Selector: selector1
(TXT on selector1._domainkey.norton.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwENrqZMD+USITELJt4EOxdtEER4ee9BWn2bw8bdSd+l0m6fkUAch8B/T/601xiYF5AhTiCPQcFbIoMPcoEY7SBbgxhSM+br1xoYV4VRd5L1C5uIHqkI0IkYGT+TN4XCJUKINO/3JcAqB9NN+FZQz0z0lDJRQAKLx+GQbDWCdpzO20LLX+8+M/O5Ym7hmc0+7t0dEvsP+jU/AEta6xrudhodgii2Canwk08hP9sKAAsnqOFOS4Yb8ulVFnsf8vdNKn4Ib11NdEFYytLP7Dj4aB04FWm41zyV6Av0/WTj5M15dOlNI8bD88oIXV0tpq/p+a04G2nZtFHDzlGstRtJkCQIDAQAB;
Selector: selector2
(TXT on selector2._domainkey.norton.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnZgOW7t1pQj5RRS1autQpYpANpw5Xp0g+6T1Jux5rmdzNDdSfUBHFVe4YtC4ziGAu7tidz7ctB5P6+t4vI5NUJ4MtjioDcvAla7uoaFEL+4rM3mVpz40YpLlnbmNSzHPsTv/pDrDlPVgukog1jJ9sLIsjymmmSo4rXkh7NrTzzX49gNNCcF9HodkZtmi5fwueDOol6GvjJ1mcTwVcvLzBlQvnHuwrpNrGN5PXwoq1oPHLXemB0dsd+IfobkK7Yt7MFnGbpFxmlJHlLrl3t77RgioY+apuACuLndUkEcCnFg8b3tk0PzSzYLiaWYbuMP8UjYxwTUV264zu6tO7qqcrQIDAQAB;
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.