Email Security Scanner
Check your domain's published SPF, DKIM, and DMARC configuration for email authentication issues. Use the results to identify missing records and plan your next steps.
SPF Verification
DKIM Configuration
DMARC Analysis
How to use your domain scan results
A DNS check is a starting point. It does not prove that every sender is configured correctly or that a mailbox is free from compromise. Review your sending services and message authentication results before changing a live domain's policy.
Learn how SPF, DKIM, and DMARC work together, then follow the email authentication setup guide. If you need help reviewing or changing your configuration, explore managed email security.
For additional MTA-STS and BIMI checks, use the email security assessment.