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 sr777.net
Found
Selector: default
(TXT on default._domainkey.sr777.net)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1PEnIDE0cdKcaRWqIjwuJgS07bVhYohTnBs85Wf4FzUzG9x+GL2lL8fztS6HxI99XOsN0Nl2hz5iI7j4tAXjDwH2fsZWX67ORxY2cGttMBFzf62UpfXd/XBXNpySkvu5hrQNCMzi7UJQA8FUDd8FMiIt+Sed0BJbAmifSyYh6WTFM6roWBOAoeGDJ39drF2JGDwBI9l+buwG2w0XmZ2+qD3RVv1hqvWdusn5GA6HgWQt+LDv7f5f8Js5M2MDRGHsqelixR+BEtmTdgq75q+YiWjS6AMqMkizaBiS+XH/4gAgBgZYWXAEXgWJXVzx200on3UJDlFqWVL2OyHOYpN/AwIDAQAB;
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.