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 unibet.co.uk
Found
Selector: selector1
(TXT on selector1._domainkey.unibet.co.uk)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAodTr2at/0HNc3qH1Ngol2hzAGtW92DIP/WQbjllvHBBGfhEnjQiJu87E5cC/CIeR1JH9u/55vCFT6pza7Re+/1G4SGKRRe2JQMgnONBHHKUXLqQoGSleHg9AW9sOpyBJUMiPTi/dkDF9+/Hrrc0OddHmMqUUblaWZoVoEbEvEQXOM1Nn/4n0pGxJDnN4QVdtoGdaqqXuOD0uV2W4oRZV1uYtlkAsQJ17MULSMymabblTTR3f5DZh4uG5bG2IJnB9jjK5BMxEAGWvHMck1lFMoH+rlXfTmQAh7fL1afT/CogU4LV4p57LLwyTJsLoI24LwZld6RuWdiTOgviqbnwUeQIDAQAB;
Selector: selector2
(TXT on selector2._domainkey.unibet.co.uk)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAosRJpYrTTW6k5UCpPz1zk3zsnif9Mx7fNRpXR8Mcn2Q+0t0hbrWRe/Uwk8gWRzqJZj38T6eltxOU/bZmdbopTmftz3IZJSP8YZwUtl9BZDcWbZQBHJDgu6jRqlemTomwiRWBqD0I/6Hp2MLqhoIaSM+pBnH15w6sMZHZcJRLBV8i0DGQF92TdMiWxxvA+Q2RuQOjj1EeFxo4SIACQLozg9uIEpJ4eGVbqeOxY7DjRanI5UcfrzAFSDIfLeu9+oJ4ooLSsgKoYug/liMGh8z9+b0hf3yRRL6Gmt5ScjJQn8qTBd5IEGa7gaKvbHm7vSzp0UZsPdrR0krINOOGaL8N6QIDAQAB;
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.