Check a domain's email security
Looks up the public DNS records that decide whether mail from a domain can be spoofed or read in transit. Runs in your browser through Cloudflare's DNS-over-HTTPS. Nothing is stored.
Every check is a plain DNS lookup, so you can confirm any result with dig or nslookup. The write-up behind these checks is Bringing a ten-year-old Google Workspace domain up to 2026 email standards.