Look up DKIM records to verify email signing configuration for any domain. Auto-detect common selectors or specify your own to check key type and public key presence.
The domain only, without https:// or a path.
Checks common selectors if empty.
DKIM (DomainKeys Identified Mail) is an email authentication method that adds a digital signature to outgoing messages. The receiving server uses the public key published in your DNS to verify that the email was sent by an authorized server and hasn't been tampered with in transit.
DKIM records are stored as TXT records at a specific subdomain: selector._domainkey.yourdomain.com. The "selector" varies by provider and lets you use multiple DKIM keys for the same domain.
| Selector | Provider |
|---|---|
| Google Workspace | |
| selector1 / selector2 | Microsoft 365 |
| k1 | Mailchimp / Mandrill |
| s1 / s2 | Amazon SES |
| default | Various (generic) |
| dkim | Various (generic) |
| smtp | Postmark |
| Various (generic) |
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