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 lotto24.de
Found
Selector: selector1
(TXT on selector1._domainkey.lotto24.de)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqypv7r5J8RonXT8j31OjaAM4uGzktJgNSkdm6rTG3y0ySNGrfp0KFg69t3dzEXXUXsdM6Ceh2qpVdKJpPlXP2N1eOGv5cZ/HLcG+bNMjXFEhe+ZrCtzrnQC3KPydn5/1qsv7OwTOVF7zDz+TIMeilZ/vPJB8ZGrq0jvdJQxk4boesEkzmCqi7eEE4fwv8SrLptXW+k7b9//HY8W9lVi6gZL0PVoi/NbBvTHMwFV7gGNi1swOuNwlUch9Xbw1kHnnT4pG+IweuYb3m5ByF0n9PjVtzyLhAcFKhZt5RU0XFP2bgl8E+vqPTfFF8AOSzJSGLS/TCFsTGwt5GohBN+l3LQIDAQAB;
Selector: selector2
(TXT on selector2._domainkey.lotto24.de)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArrU2L4niO596SKLpy+CXuZpKNj+9e0lQNihvKoMfPPBra4mV80aKWkZJ0AIwzlZD5Ggs0+/Ml9Hz7x/fQZ+xL0NNyjOqqVmtYZq05nQyOt5Ul6XMb9dMWI4qT3elu1vrmahMC87IlXTZvXv4yIvz1DIz0zZ4jKSvazOv3ezFPRYXw4EAmy8GPWCmF5OknE+6Q3NA3sD+lLQrkl67LF9irjhYsmLNNwqUNY/Zqj/iqpMBdsUQNSBOMy1HbLr+hrjHTuOz5ku1oIzqoluAHZRWF2ua9xQll8+tWMxtViNOqTDuc2gombHszBW18cJ/1I0BPVArGE7WKQDoPbbt2+3PQQIDAQAB;
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.