{ "ok": true, "domain": "tuta.com", "generated_at": "2026-08-10T11:21:41-05:00", "cache": { "hit": true, "ttl": 0 }, "score": { "total": 92, "label": "Excellent", "categories": { "dns": 100, "mail": 100, "security": 84, "network": 55, "availability": 100 }, "category_weights": { "dns": 25, "mail": 20, "security": 25, "network": 10, "availability": 20 }, "items": [ { "category": "dns", "title": "IPv4 (A)", "max_points": 30, "earned_points": 30, "lost_points": 0, "detail": "1 IPv4 address(es) detected." }, { "category": "dns", "title": "IPv6 (AAAA)", "max_points": 10, "earned_points": 10, "lost_points": 0, "detail": "1 IPv6 address(es) detected." }, { "category": "dns", "title": "Name server redundancy", "max_points": 20, "earned_points": 20, "lost_points": 0, "detail": "4 NS record(s); 2 or more required." }, { "category": "dns", "title": "SOA record", "max_points": 10, "earned_points": 10, "lost_points": 0, "detail": "Authoritative zone record." }, { "category": "dns", "title": "DNSSEC chain", "max_points": 15, "earned_points": 15, "lost_points": 0, "detail": "DS and DNSKEY detected." }, { "category": "dns", "title": "CAA policy", "max_points": 5, "earned_points": 5, "lost_points": 0, "detail": "Certificate authority restriction." }, { "category": "dns", "title": "DNS propagation", "max_points": 10, "earned_points": 10, "lost_points": 0, "detail": "Agreement between public resolvers." }, { "category": "mail", "title": "MX records", "max_points": 20, "earned_points": 20, "lost_points": 0, "detail": "1 MX record(s)." }, { "category": "mail", "title": "SPF", "max_points": 25, "earned_points": 25, "lost_points": 0, "detail": "SPF policy published." }, { "category": "mail", "title": "DMARC", "max_points": 25, "earned_points": 25, "lost_points": 0, "detail": "DMARC policy published." }, { "category": "mail", "title": "DKIM", "max_points": 20, "earned_points": 20, "lost_points": 0, "detail": "A DKIM selector was verified." }, { "category": "mail", "title": "MTA-STS", "max_points": 5, "earned_points": 5, "lost_points": 0, "detail": "Mail transport policy." }, { "category": "mail", "title": "TLS-RPT", "max_points": 5, "earned_points": 5, "lost_points": 0, "detail": "TLS reporting policy." }, { "category": "security", "title": "Valid TLS certificate", "max_points": 55, "earned_points": 55, "lost_points": 0, "detail": "35 day(s) remaining." }, { "category": "security", "title": "Certificate lifetime", "max_points": 10, "earned_points": 10, "lost_points": 0, "detail": "Full points require at least 30 days remaining." }, { "category": "security", "title": "HTTP security headers", "max_points": 35, "earned_points": 19, "lost_points": 16, "detail": "5 of 9 evaluated headers detected." }, { "category": "network", "title": "PTR reverse DNS", "max_points": 30, "earned_points": 0, "lost_points": 30, "detail": "PTR not detected." }, { "category": "network", "title": "IPv4 diversity", "max_points": 35, "earned_points": 20, "lost_points": 15, "detail": "Two or more IPv4 addresses receive full points." }, { "category": "network", "title": "IPv6 connectivity", "max_points": 35, "earned_points": 35, "lost_points": 0, "detail": "AAAA availability." }, { "category": "availability", "title": "DNS resolution", "max_points": 40, "earned_points": 40, "lost_points": 0, "detail": "At least one address family must resolve." }, { "category": "availability", "title": "HTTP response", "max_points": 40, "earned_points": 40, "lost_points": 0, "detail": "HTTP/2 200 " }, { "category": "availability", "title": "HTTPS final URL", "max_points": 20, "earned_points": 20, "lost_points": 0, "detail": "Final URL uses HTTPS." } ], "methodology": "Each category is normalized to 100. The total is the weighted sum: DNS 25%, Email 20%, Security 25%, Network 10%, Availability 20%.", "diagnostics": [ { "level": "ok", "title": "IPv4 (A)", "detail": "1 IPv4 address(es) detected.", "category": "dns", "max_points": 30, "earned_points": 30, "lost_points": 0 }, { "level": "ok", "title": "IPv6 (AAAA)", "detail": "1 IPv6 address(es) detected.", "category": "dns", "max_points": 10, "earned_points": 10, "lost_points": 0 }, { "level": "ok", "title": "Name server redundancy", "detail": "4 NS record(s); 2 or more required.", "category": "dns", "max_points": 20, "earned_points": 20, "lost_points": 0 }, { "level": "ok", "title": "SOA record", "detail": "Authoritative zone record.", "category": "dns", "max_points": 10, "earned_points": 10, "lost_points": 0 }, { "level": "ok", "title": "DNSSEC chain", "detail": "DS and DNSKEY detected.", "category": "dns", "max_points": 15, "earned_points": 15, "lost_points": 0 }, { "level": "ok", "title": "CAA policy", "detail": "Certificate authority restriction.", "category": "dns", "max_points": 5, "earned_points": 5, "lost_points": 0 }, { "level": "ok", "title": "DNS propagation", "detail": "Agreement between public resolvers.", "category": "dns", "max_points": 10, "earned_points": 10, "lost_points": 0 }, { "level": "ok", "title": "MX records", "detail": "1 MX record(s).", "category": "mail", "max_points": 20, "earned_points": 20, "lost_points": 0 }, { "level": "ok", "title": "SPF", "detail": "SPF policy published.", "category": "mail", "max_points": 25, "earned_points": 25, "lost_points": 0 }, { "level": "ok", "title": "DMARC", "detail": "DMARC policy published.", "category": "mail", "max_points": 25, "earned_points": 25, "lost_points": 0 }, { "level": "ok", "title": "DKIM", "detail": "A DKIM selector was verified.", "category": "mail", "max_points": 20, "earned_points": 20, "lost_points": 0 }, { "level": "ok", "title": "MTA-STS", "detail": "Mail transport policy.", "category": "mail", "max_points": 5, "earned_points": 5, "lost_points": 0 }, { "level": "ok", "title": "TLS-RPT", "detail": "TLS reporting policy.", "category": "mail", "max_points": 5, "earned_points": 5, "lost_points": 0 }, { "level": "ok", "title": "Valid TLS certificate", "detail": "35 day(s) remaining.", "category": "security", "max_points": 55, "earned_points": 55, "lost_points": 0 }, { "level": "ok", "title": "Certificate lifetime", "detail": "Full points require at least 30 days remaining.", "category": "security", "max_points": 10, "earned_points": 10, "lost_points": 0 }, { "level": "warning", "title": "HTTP security headers", "detail": "5 of 9 evaluated headers detected.", "category": "security", "max_points": 35, "earned_points": 19, "lost_points": 16 }, { "level": "error", "title": "PTR reverse DNS", "detail": "PTR not detected.", "category": "network", "max_points": 30, "earned_points": 0, "lost_points": 30 }, { "level": "warning", "title": "IPv4 diversity", "detail": "Two or more IPv4 addresses receive full points.", "category": "network", "max_points": 35, "earned_points": 20, "lost_points": 15 }, { "level": "ok", "title": "IPv6 connectivity", "detail": "AAAA availability.", "category": "network", "max_points": 35, "earned_points": 35, "lost_points": 0 }, { "level": "ok", "title": "DNS resolution", "detail": "At least one address family must resolve.", "category": "availability", "max_points": 40, "earned_points": 40, "lost_points": 0 }, { "level": "ok", "title": "HTTP response", "detail": "HTTP/2 200 ", "category": "availability", "max_points": 40, "earned_points": 40, "lost_points": 0 }, { "level": "ok", "title": "HTTPS final URL", "detail": "Final URL uses HTTPS.", "category": "availability", "max_points": 20, "earned_points": 20, "lost_points": 0 } ] }, "dns": { "records": { "A": [ "185.205.69.12" ], "AAAA": [ "2a10:e000:1::12" ], "CNAME": [], "MX": [ "0 mail.tutanota.de." ], "TXT": [ "\"google-site-verification=tsH9g7KEFw9oimUXXbhRw4VKc1hQ9KXOmozGUju5dgI\"", "\"linkedin-site-verification=fc65c43a-b489-47a0-b0ca-04775846b512\"", "\"v=spf1 include:spf.tutanota.de -all\"" ], "NS": [ "ns-150.awsdns-18.com.", "ns-1138.awsdns-14.org.", "ns-724.awsdns-26.net.", "ns-1967.awsdns-53.co.uk." ], "SOA": [ "ns-1967.awsdns-53.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400" ], "CAA": [ "0 issue \"letsencrypt.org\"", "0 issue \"sectigo.com\"" ], "DS": [ "47014 13 2 19B56145661634128156DC51C13700811F2CFDAC1F3BB603F7821055 DF72BA9F" ], "DNSKEY": [ "256 3 13 AWY2vPF/EkUWgX3Kj/49NGIJEJ1Kk3NYErLRklvM66MeAWUall39gKO9 YsPL+e1a4g/W09te0UkBjdKLT2SDnA==", "256 3 13 cepOP85qy8Nb4rRWdyFZYZnisG1ShsmqqqihWBW+iVUGK64wT48PzvYB BLpNyKxohP/8C/VbuGvwSQbLzPy8vQ==", "257 3 13 os2q8ALQGmPkTNlO5NIMo8ahIfRHCWEE/whvXl5WnAedqON21t9n9eIN Omfs6HctNkOcLSlpl06nRnP5z9XhbQ==" ], "RRSIG": [], "NSEC": [], "NSEC3": [], "SRV": [], "NAPTR": [], "TLSA": [], "SSHFP": [] }, "ipv4": [ "185.205.69.12" ], "ipv6": [ "2a10:e000:1::12" ] }, "mail": { "spf": "v=spf1 include:spf.tutanota.de -all", "dmarc": "v=DMARC1; p=quarantine; adkim=s", "dkim_selector": "s1", "dkim_host": "s1._domainkey.tuta.com", "dkim": "v=DKIM1; k=rsa; h=sha256; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4d/jridMLV9rZ/lBiDYA17BWKWIHnvLzCVGoFcOENqxLym8ro869rgp82mcxobr2kPyd+sfAS/REOoZ+pkf1wnyywQrf4r9i1O9Bnop4/WsRXTIfgKtaIOtwyhgsv9JH5KpxeQxHwl9CEHhqJuFJp808gbqRZt6PDp2YetB23EyJ5kp/jpn5/aCvVpC27+jnQH6NoYN8wNsC6cTSA1EhL1etUwJrZUwRtf8S2PIDJOm1/CUtc9a/d3sZk15LDtUUbODrQMrj5mzMzHPYp43MwLFRlvSa/O+xIx8esNxwnDa7PH6PZLB8lhtkY49/4ofKV5BQKMGmGmyn+rgYDHD8iwIDAQAB", "spf_analysis": { "valid": true, "lookups": 1, "final": "-all", "message": "Within the estimated limit" }, "dmarc_analysis": { "valid": true, "policy": "quarantine" }, "bimi": "", "mta_sts": "v=STSv1; id=20190723;", "tls_rpt": "v=TLSRPTv1;rua=mailto:mta-sts-reports@tutanota.com" }, "advanced": { "ptr": "", "propagation": { "consistent": true, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "185.205.69.12" ], "time_ms": 86.07 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "185.205.69.12" ], "time_ms": 33.32 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [ "185.205.69.12" ], "time_ms": 39.65 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "185.205.69.12" ], "time_ms": 45.39 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "185.205.69.12" ], "time_ms": 53.64 } ] } }, "ssl": { "available": true, "issuer": "Let's Encrypt", "subject": "tuta.com", "valid_from": "2026-06-17T01:51:47-05:00", "valid_to": "2026-09-15T01:51:46-05:00", "days_remaining": 35, "san": [ "tuta.com" ], "protocol": "TLSv1.3", "cipher": "TLS_AES_128_GCM_SHA256" }, "http": { "url": "https://tuta.com/", "status": "HTTP/2 200 ", "http_version": "3", "headers": { "date": "Mon, 10 Aug 2026 16:21:32 GMT", "x-frame-options": "DENY", "strict-transport-security": "max-age=63072000; includeSubDomains; preload", "x-content-type-options": "nosniff", "referrer-policy": "no-referrer", "access-control-expose-headers": "Date,app-types-hash", "content-security-policy": "default-src 'none'; script-src 'self' 'sha256-QzWFZi+FLIx23tnm9SBU4aEgx4x8DsuASP07mfqol/c=' 'sha256-Ya0pUYrC7nM5Cn/056TyVuEiz6dFGrzmkWzgON0pF0U=' 'sha256-VmEf2BGdqVUwcvyhTyarJo/bY7DNqS2+T2sz4IO/kbw=' 'sha256-c/REa9kAvBIV+gZmJKlHkkvmgztM7TzBMXhyF0cx7O0=' 'sha256-eIXWvAmxkr251LJZkjniEK5LcPF3NkapbJepohwYRIc=' 'sha256-HlNFqGRkRhvOJor1B9Y/Kel20zUIwaMBqtxBhAWTIQI=' 'sha256-xjaDQy32bheY+JozgM9UmBa5vWZ2Q1fkRzLFo7RqzLk=' 'sha256-Q2BPg90ZMplYY+FSdApNErhpWafg2hcRRbndmvxuL/Q=' 'sha256-gPxRf/xXylU+m1MS3X2eO2FaXfC4fdHx0TdnWrwGoOI=' 'sha256-1zEfgAtz+R7o63G9toRQJpODU7qqT5izj2iyBPRy1mQ='; child-src 'self'; frame-src https://*.youtube.com https://*.vimeo.com; font-src 'self'; img-src http: data: *; media-src 'self'; style-src 'self' 'unsafe-inline'; frame-ancestors 'none'; base-uri 'none'; connect-src 'self' https://tuta.com https://tuta.com data: * wss://app.tuta.com https://app.tuta.com https://api.github.com https://www.reddit.com https://mail.tutanota.com wss://mail.tutanota.com;", "etag": "W/\"///+YGHCdVg/////4snmMg\"", "last-modified": "Mon, 10 Aug 2026 08:59:30 GMT", "content-length": "256350", "content-type": "text/html;charset=utf-8", "accept-ranges": "bytes", "cache-control": "no-cache,public,no-transform" }, "security_checks": { "strict-transport-security": true, "content-security-policy": true, "x-content-type-options": true, "x-frame-options": true, "referrer-policy": true, "permissions-policy": false, "cross-origin-opener-policy": false, "cross-origin-embedder-policy": false, "cross-origin-resource-policy": false }, "server": "", "powered_by": "" }, "webpage": { "url": "https://tuta.com/", "title": "Tuta: Turn ON privacy for free with secure emails, calendars & contacts | Tuta", "description": "Tuta guarantees your data stays private for free & without ads. Quantum-resistant encryption makes Tuta the best secure technology solution to protect your privacy.", "success": true, "error": "", "status": 206 }, "network": { "185.205.69.12": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" } }, "smtp": { "host": "mail.tutanota.de", "ports": [ { "port": 25, "open": false, "time_ms": 11.6, "banner": "", "error": "Connection refused" }, { "port": 465, "open": false, "time_ms": 4020.9, "banner": "", "error": "Connection timed out" }, { "port": 587, "open": false, "time_ms": 4022, "banner": "", "error": "Connection timed out" } ] }, "visitor": { "ip": "216.73.217.62", "reverse": "", "country": "", "country_code": "", "region": "", "city": "", "latitude": null, "longitude": null, "isp": "", "organization": "", "asn": "", "timezone": "", "browser": "Other", "os": "Other", "language": "", "user_agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)", "is_bot": true, "cloudflare": false }, "analysis_time_ms": 114.38 }