spf dkim dmarc checker
SPF DKIM DMARC checker for IT teams: health check guide
Run dig TXT yourdomain.com for SPF, dig TXT _dmarc.yourdomain.com for DMARC, and inspect outbound message headers for DKIM signatures. That three-step check gives you an accurate picture of your domain’s authentication status in under five minutes. If anything looks wrong, or if you want ongoing visibility
