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 bgo.com
Found
Selector: selector1
(TXT on selector1._domainkey.bgo.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3LUtW6kHvWVHOjq3DI2YSuaT4wBXIThDLuTI/GMD6utJoKIPOmOoKhLVKMm9w6f8uAnLIclwGE7V5LgRMsJARbpAmgzjNax9C9FTdoLJ9dRE9Yt6NMbPTv3jSwEaK0x0kjjcjLf0LbQRhWOavU1pj/YvkMlwjEKKNt8qMFtFlEN2cVJhon717c/am6dSWzwrfqMZqrQ087AkOhgW1EpvqOfMIoKLtHNV73i3mBH4+xYk4E52NI8IcFifIANHdl5hOWeVac9aAs2S4tQqfbxu98eyR9w09yjE9iuN41PVRN99tLMsiAsCYrt4t9TmdNWQMc9bp2Ndxx6joHNR71bAuQIDAQAB;
Selector: selector2
(TXT on selector2._domainkey.bgo.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx3v4HatvpXD4mKi3zDH1V526iMTkL8I7EU2MtT4b9mexNEUEGgIYFW1fHoFHVwmTlYEWMV66UclXB+HeIw1OwSHnz9d78U7Hp/jetZqaGja1/meM5WVIsSNQEhBPucmeMTA8kDky9dJw/r2jEjZkwsC0Sjl9AfVDWl+nhqRoqmiWvu39LvOoW73d5mqe3AdZ71d84EYslosH8aFURV+FG7/WFEVi1rD2NctsKwkRG1FV0ZYYjTHI46vpUN1RC94LZ0kw1tFIygk236UGm+bjRDvy5+OD9RQvQd+KOl3Kb9ZZQUGwwplbsIpYIAhvuMcXTIuptwFYvuxGLWcpNs3jEQIDAQAB;
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.