Domain Security Checkup

Check your domain's SPF, DKIM, and DMARC records

Leave empty to automatically check: selector1, selector2 (Microsoft 365), google, and default (Google Workspace)
📖 How to manually check DKIM selectors

DKIM records are stored in DNS as TXT records with the format:

selector._domainkey.yourdomain.com

Common selectors by provider:

  • Microsoft 365: selector1._domainkey.domain.com and selector2._domainkey.domain.com
  • Google Workspace: google._domainkey.domain.com
  • Other providers: May use default._domainkey.domain.com or custom selectors

This tool is absolutely free to use. No information about your domain is collected. We don't track domains you check, store any data, collect personal information, or retain any information about your domain. All checks are performed in real-time and no data is saved.