Without DNSSEC, your mails are vulnerable to email hijacking (malicious actors diverting your emails to rogue email servers).

1. Check with your Domain Registrar and DNS Hosting Provider to confirm they support DNSSEC.
2. Have your registrar or hosting provider DNSSEC-sign your domain.
3. Verify the DS (Delegation Signer) record is correctly published at your registrar once signing is complete.
4. Re-run the scan (Rescan domain) to confirm DNSSEC now validates correctly for your domain.