What Requires Attention
The BIG Questions
Domain Overview
Technical Findings
Email Authentication
Mail Transport Security
DNS Security
Brand & Certificate Controls
Priority Actions 3 total Achievable: Secure
DKIM is only configured for third-party services, not your primary mail platform (Microsoft 365). Enable DKIM signing in Microsoft 365 settings to cover all outbound mail. Note: large organizations may already have DKIM configured with custom or rotating selectors not discoverable through standard checks — try re-scanning with a custom DKIM selector, or verify in your Microsoft 365 admin console.
Publish CAA DNS records to restrict which Certificate Authorities can issue TLS certificates for your domain. Specify your preferred CA (e.g., letsencrypt.org, digicert.com). CAA is advisory — CAs must check it before issuing, but absence means any CA can issue.
Publish a BIMI DNS record pointing to your brand logo (SVG Tiny PS format). For full support in Gmail, you will also need a Verified Mark Certificate (VMC).
Appendix — Additional Resources
Full technical details including raw DNS records, DKIM public keys, IP/ASN mappings, resolver consensus evidence, and verification commands are available in the Engineer's DNS Intelligence Report.
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