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 08401.biz
Found
Selector: default
(TXT on default._domainkey.08401.biz)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA45DZkGRcSSr00q7xG6TZLFlENRCPg5XcW8L+8HSMrPPk7fx24nAHTIo2xxl8rssMmgq9hhDAInIobhiDD4MdyZsqL7I2YAnI9F1wKZJXopLm16A/OVDKJOSrWVYM+h85/4mqFW3y6jezI3q8XOgK9AhrHyfqxpIlou76/NfR+ErpHW9dnHlTxyKtgc20PxeTdSeuiaSjYIyYRNfTj8t06wZh6I53B2t92pOm0A3zCexey6SFW2MOb0idOHI8VDhNkgOdWMgkEtYTK4BX89XJsm9qqrAPSx0qKm/Wi/7NVUq1QCQ5p48gc0JO0L3GKc1/MKrMiIXrDJfQEBoD8bO4/wIDAQAB;
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.