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 slither.io
Found
Selector: selector1
(TXT on selector1._domainkey.slither.io)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwbQCjd5CwoNyXqgFLgvYHYMq5EK2gU1rvIewpM1MJwtw51xU2XV7Nv9X+cqpwt6KKIypN9wV6BVnN+kIc+xq41YDFQ8nWaXwwn7vXUcZne6FiC/yna+siFTw5loWXRB+Kpgz83ZMBzSPW4j5P52J5Y3v7IheUJVoMpgtEshuCpYfWpOc/znVyUM5zaLVWdVaxHL/+Lb6XBw5V5ppHX5rJHH3kPxzk3hlGj+w2Qwtw3y8RJghH1eLGbxrLovwxPEdBLe7iesqoC5OaV5NSew9jVj5Fv1npO0tNb5QkUmoKWCDpmjVgDa/F/xvr3EzjDa1PhLfimXLQRQbi+YKpMcUDQIDAQAB;
Selector: selector2
(TXT on selector2._domainkey.slither.io)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr+DRKnrksL8rfCViUgdDnCv2wQgnAfe3Ywwil3sdnD//wBGNx/QqrSasIRwXiO028lwDeAmB/t532vFibCJYM5EyQ/nV2YdPhBV7Ngzw2RkRO463/8RQ56nBtANLASIU7jLfZgupZL2URHlvElZ9zJe637t+KG2HXfUpKTQvNlh9TjFmCb9lXTG6ki3qQpscrDLdpVURohbR2+c5nVui7kEEojX3kXoYReD7a6fBAh4Lv826wy/iYkkEHVzRP7Dk1xK/sxMPjkBkyrd714S6HLzNnw/IS+a+oGN03IH611FExzc9+QPZlOtMdBYYkakxn3d5mLsVFLhUlsgrbnXh/QIDAQAB;
Selector: google
(TXT on google._domainkey.slither.io)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtTsEXzQZgkJGL1qBsj0lBxL6IUKO8VROZDo0xvJJwpn4JBQsNTpdgM1euwx60I5Hh1FnYA2NnyY5I6BvmkKxC9m58YlVh8gvqosnvoOfeLgFjgwqwtnQZfYXHVMHDQZyad5p7xgUksLyvaNRP0GGALW01ZIJ0jfi35B8mSdEpmq+kKptMa/MImfsAugTDQlDyrljFINa3iP10FvMBQXjanAcwEdm/eJT5jcsXl6G1jll8vVHCawHZRyxuXlgIqDDEdgEQeo39UzSub/Tm9P6hb9McO5mJZiM1Ew7MCUIM7d4YldnHu0kCS+wqKl9+3jw65kOU8UWwORaM2RQWmVDgQIDAQAB
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.