DKIM Record Lookup & Analysis
Verify your email authentication setup instantly. Analyze key length strength and get actionable security recommendations for your domain.
Enter a domain name above to check for DKIM records.
What is DKIM?
DKIM (DomainKeys Identified Mail) is an email authentication method that allows receivers to verify that an email message was indeed sent by the domain it claims to be from and that the message hasn't been modified in transit.
How DKIM Works
- Your email server signs outgoing messages with a private key
- The corresponding public key is published in DNS as a TXT record
- Receiving servers verify the signature using the public key
- Valid signatures indicate the message is authentic and unmodified
Common DKIM Selectors
Google Workspace:
google
Microsoft 365:
selector1, selector2
Generic:
default, k1, k2, mail
Email Services:
mailgun, sendgrid, mandrill
Setting Up DKIM
- Generate a DKIM key pair (private/public keys)
- Configure your email server to sign messages with the private key
- Publish the public key in DNS as a TXT record at:
selector._domainkey.yourdomain.com - Test your configuration using this tool
Benefits of DKIM
- Prevents email spoofing and phishing
- Improves email deliverability
- Builds sender reputation
- Required for DMARC compliance
- Reduces false positives in spam filters