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 ladbrokes.com.au
Found
Selector: selector1
(TXT on selector1._domainkey.ladbrokes.com.au)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDE77d1OD6Lux5tgVRhwswRGaUrn6JVDL1j4c3OR4rONTHe6ZzQqmmRmMH84xXjfQVzdBHlC27RoU0GdP5BCKR+XRoPOPiQ/LuO1BFCUn0qTTn3SfYKqU6NDu4k4Z+fqvSNx1jgLNUZ6kz9EyuHLSnhhyMZB0vBx6OEpR0EoHf05wIDAQAB; n=1024,1480057421,1495695821
Selector: selector2
(TXT on selector2._domainkey.ladbrokes.com.au)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvrRi4D3/svIdm/XsfJEscr4b2tJpjPU0iqxWTD5EH+TDv2i7kTzh9+uC5aGpSUiFBKY+y5y8kbHfZMxmRzXZ2Sv9u+xuuTvPUwxkgVW5IEfllmE8GCSO89Htw1mDZxkaeXp/ViucZxEqXjrx/Fs+SKJ04S3BySK/s2i5Kjy4UKfJpQxEvfffb8LwxaTTtfDqFngNQM75kT9t8Q4v5xqRDJgqLQie1vq31yMoJzAviXpEv+SJ3GPkUfV0++0OGei0U7iMmD9WBJaYNTm+Mxxlxba4TW5iq62EMpr+72/Xd8Rw5w7mbAlesOinFmah/kI3x6XuPqcuU6JggeoyLysNOQIDAQAB;
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.