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 rambler.ru
Found
Selector: mail
(TXT on mail._domainkey.rambler.ru)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCoQ9yIAYL2sbIgD/9xZLtHMePuMRAhjV18ri9Fa1pGQ99UQcbArzxZYmUaZ1tBEjoUG59NirjkfA6Gw9Wj036+JICZXpB9aGhcGrdlPkTVtMyPSTJiT4PFpC3xOcUkVuCz5nlmHisuNb9bFFG4Hh1+84As2gaIdz0GF2QLmr5biwIDAQAB
Selector: dkim
(TXT on dkim._domainkey.rambler.ru)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDp1nBSHt3Sd81E0aun3E3GwTjwzQk88t8ZQe4x5LyzyWQF4gJqxp8xRBeZT0OsgLA+DdAH3IF9oqwbl9hZz8OkNXGk+5WvP+4RKjpQZy5RQFhp2ZjeCyW6yYsVo0Iyf/AvfXCSkK9iV+pV7rul/xuBgYAPH8emY3uaLBEysfBl1QIDAQAB
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.