{"kind":"host","input":"email.cm.com","report":{"host":"email.cm.com","checkedAt":"2026-10-31T17:30:59.896Z","a":{"status":"found","values":["104.18.2.206","104.18.3.206"],"ttl":300,"via":"Cloudflare","cname":[]},"aaaa":{"status":"found","values":["2606:4700::6812:2ce","2606:4700::6812:3ce"],"ttl":300,"via":"Cloudflare","cname":[]},"verdict":"dual-stack"},"readiness":{"grade":"B","summary":"Works over IPv6, with one gap: its mail servers lack IPv6.","reachabilityTested":true,"checks":[{"key":"web","label":"Website over IPv6","status":"pass","detail":"email.cm.com has 2 IPv6 addresses and answers on every one we tested.","addresses":[{"address":"2606:4700::6812:2ce","result":"answers","port":443},{"address":"2606:4700::6812:3ce","result":"answers","port":443}]},{"key":"mail","label":"Mail servers (MX) have IPv6","status":"fail","detail":"None of the mail servers has an AAAA record.","hosts":[{"host":"mx.email.cm.com","ipv6":false}]},{"key":"dns","label":"Nameservers have IPv6","status":"pass","detail":"2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.","hosts":[{"host":"donovan.ns.cloudflare.com","ipv6":true},{"host":"karsyn.ns.cloudflare.com","ipv6":true}]}]},"https":{"status":"pass","summary":"Loads over IPv6 with a valid certificate: HTTP 403.","hops":[{"url":"https://email.cm.com/","address":"2606:4700::6812:2ce","status":403,"tls":"valid"}]},"receiptId":"uU2ge8NbTa","reused":true,"measuredAt":"2026-10-31T17:30:59.982Z"}