{ "ok": true, "domain": "nankai.edu.cn", "generated_at": "2026-08-10T11:30:39-05:00", "cache": { "hit": true, "ttl": 0 }, "score": { "total": 69, "label": "Fair", "categories": { "dns": 70, "mail": 90, "security": 65, "network": 50, "availability": 60 }, "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": 0, "lost_points": 10, "detail": "0 IPv6 address(es) detected." }, { "category": "dns", "title": "Name server redundancy", "max_points": 20, "earned_points": 20, "lost_points": 0, "detail": "3 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": 0, "lost_points": 15, "detail": "Both DS and DNSKEY are required." }, { "category": "dns", "title": "CAA policy", "max_points": 5, "earned_points": 0, "lost_points": 5, "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": "2 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": 0, "lost_points": 5, "detail": "Mail transport policy." }, { "category": "mail", "title": "TLS-RPT", "max_points": 5, "earned_points": 0, "lost_points": 5, "detail": "TLS reporting policy." }, { "category": "security", "title": "Valid TLS certificate", "max_points": 55, "earned_points": 55, "lost_points": 0, "detail": "97 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": 0, "lost_points": 35, "detail": "0 of 9 evaluated headers detected." }, { "category": "network", "title": "PTR reverse DNS", "max_points": 30, "earned_points": 30, "lost_points": 0, "detail": "PTR: 190.45.30.222.in-addr.arpa" }, { "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": 0, "lost_points": 35, "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": 0, "lost_points": 40, "detail": "HTTP/1.1 403 Forbidden" }, { "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": "error", "title": "IPv6 (AAAA)", "detail": "0 IPv6 address(es) detected.", "category": "dns", "max_points": 10, "earned_points": 0, "lost_points": 10 }, { "level": "ok", "title": "Name server redundancy", "detail": "3 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": "error", "title": "DNSSEC chain", "detail": "Both DS and DNSKEY are required.", "category": "dns", "max_points": 15, "earned_points": 0, "lost_points": 15 }, { "level": "error", "title": "CAA policy", "detail": "Certificate authority restriction.", "category": "dns", "max_points": 5, "earned_points": 0, "lost_points": 5 }, { "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": "2 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": "error", "title": "MTA-STS", "detail": "Mail transport policy.", "category": "mail", "max_points": 5, "earned_points": 0, "lost_points": 5 }, { "level": "error", "title": "TLS-RPT", "detail": "TLS reporting policy.", "category": "mail", "max_points": 5, "earned_points": 0, "lost_points": 5 }, { "level": "ok", "title": "Valid TLS certificate", "detail": "97 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": "error", "title": "HTTP security headers", "detail": "0 of 9 evaluated headers detected.", "category": "security", "max_points": 35, "earned_points": 0, "lost_points": 35 }, { "level": "ok", "title": "PTR reverse DNS", "detail": "PTR: 190.45.30.222.in-addr.arpa", "category": "network", "max_points": 30, "earned_points": 30, "lost_points": 0 }, { "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": "error", "title": "IPv6 connectivity", "detail": "AAAA availability.", "category": "network", "max_points": 35, "earned_points": 0, "lost_points": 35 }, { "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": "error", "title": "HTTP response", "detail": "HTTP/1.1 403 Forbidden", "category": "availability", "max_points": 40, "earned_points": 0, "lost_points": 40 }, { "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": [ "222.30.45.190" ], "AAAA": [ ";; communications error to 69.64.44.20#53: timed out" ], "CNAME": [], "MX": [ "5 hzmx01.mxmail.netease.com.", "10 hzmx02.mxmail.netease.com." ], "TXT": [ "\"04.04.2023\"", "\"_globalsign-domain-verification=KCaJJFeiDclt7rBkevG7o4F6-L1o_tNL1t8YjLfzJP\"", "\"v=spf1 include:spf.163.com -all\"" ], "NS": [ "dns1.nankai.edu.cn.", "dns6.nankai.edu.cn.", "dns.nankai.edu.cn." ], "SOA": [ "ns.nankai.edu.cn. admin.example.com. 2100086976 10800 900 604800 86400" ], "CAA": [], "DS": [], "DNSKEY": [ "257 3 7 AwEAAbaOmh8ZZsMSS4YSmmLTNHAiOZzKWQe7wyPYsAmI6Htkzs7USwLJ Ng9dlQR0uiIbuiXScB/6BFTcpGIeTRGRBHiFs1i7weePLjRV1YWvl40Z W6UIBJbf40WzkomjSSnDn3hyTWjOXz3ycEjOfVkgvZ6gvSsrpP3hJ4Jh eXLiq/M7vM07RZMvY4fTdeFcFTYrUvF326YueMKETyetxUJN/KlqfIyq mnC8039qaX9T+h9QXRMel2S4D563X5ms+9uRF9jeogHM6L26ibzEpr5U F9TVp+H95StrwpZVZyDBlQh85xSCoKtfZs5QoIC6Ptj2Pi7vgWEhzQ+G CCvJU7by7m8=", "256 3 7 AwEAAdPoVRStpPiKsv/3yO2BGaoYM99DByICe5RqOjN5GTqeh6XfbaZ9 Q+/7z7QRU0zolzybmR4ReYST/0ZM/T9zONWlIjljXzZyzYJ+crDhnwRh nAQMHpsa7ecJvW8MYU4PAKwT4mFWX7W6UTBZRBoawvCcGenoWyep0aSn He6QrpjH" ], "RRSIG": [ "NS 7 3 600 20260826142052 20260727140748 47162 nankai.edu.cn. oTv0lMxj24w2mEYjOymv0vHnMKkWpZEacjOx9oS0kOtyk52TejZ5Ljsq Np+JK/GnIlMUqSeD9uON6oSQz/yJ8Avio0yzx5WoNGZFl0hsrNHv/scu j7VSRuS62AWyCjdiA4FNbInF2YhSSp/2G+qeQq7OlAmWwOA5LfnQzYCZ LU0=", "TXT 7 3 600 20260909072246 20260810070031 47162 nankai.edu.cn. T85o3AlnFwDTvO4C/+yINoknH3Ol0A+x7KGdoVelY0ecJgoX1HgIV4oX 9JXfMMdJvksoCqDIfoS6Fn8djrBu6H2cmWW/ePSQ92XFEHAqaQgQGObD Q8W/jAWnPInWSLaUcV1tuBLy2JzFgMKQ3OTdXbeV+8QGwVcmGqyQHa+r wl8=", "MX 7 3 600 20260825035944 20260726034203 47162 nankai.edu.cn. biS3oFewYwZ0pPFhpGWPG6DjBfQR+0qANDSnwwFzRaLwhx8FwkusLViC 8vor2vgPll7AdYDLXRkfdhMFvwaeLHDqumlKmX4F6C+TqNp7Tz0Nq2WH KBuHEE8fBhsZ3pAVyLrKGiXfon1UTsv8JQFHIFjlWmCryyhClSQhPSnk FTY=" ], "NSEC": [], "NSEC3": [], "SRV": [], "NAPTR": [], "TLSA": [], "SSHFP": [] }, "ipv4": [ "222.30.45.190" ], "ipv6": [] }, "mail": { "spf": "v=spf1 include:spf.163.com -all", "dmarc": "v=DMARC1; p=none; fo=1; ruf=mailto:dmarc@qiye.163.com; rua=mailto:dmarc_report@qiye.163.com", "dkim_selector": "default", "dkim_host": "default._domainkey.nankai.edu.cn", "dkim": "v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDN+3JbtIgxbtBov9tH1L7yvjL8SfCMTLrd7LGV+Xu1+QeYin+RhKMhCGWzF9X/sgOSagAWbY+tNZDADS2yL8hv1MpyGuxS+2+4FWsboRbnFBYOO9eZfHg3a2tq5PfnvNeE035LCQWpfIr18PUq0Hkp3I/YpsXPsigqzIXlN65kawIDAQAB", "spf_analysis": { "valid": true, "lookups": 1, "final": "-all", "message": "Within the estimated limit" }, "dmarc_analysis": { "valid": true, "policy": "none" }, "bimi": "", "mta_sts": "", "tls_rpt": "" }, "advanced": { "ptr": "190.45.30.222.in-addr.arpa", "propagation": { "consistent": true, "results": [ { "provider": "Google", "server": "8.8.8.8", "result": [ "222.30.45.190" ], "time_ms": 285.13 }, { "provider": "Cloudflare", "server": "1.1.1.1", "result": [ "222.30.45.190" ], "time_ms": 720.32 }, { "provider": "Quad9", "server": "9.9.9.9", "result": [ "222.30.45.190" ], "time_ms": 734.44 }, { "provider": "OpenDNS", "server": "208.67.222.222", "result": [ "222.30.45.190" ], "time_ms": 755.86 }, { "provider": "AdGuard", "server": "94.140.14.14", "result": [ "222.30.45.190" ], "time_ms": 400.88 } ] } }, "ssl": { "available": true, "issuer": "GlobalSign nv-sa", "subject": "*.nankai.edu.cn", "valid_from": "2025-10-14T21:51:05-05:00", "valid_to": "2026-11-15T20:51:04-06:00", "days_remaining": 97, "san": [ "*.nankai.edu.cn", "nankai.edu.cn" ], "protocol": "TLSv1.2", "cipher": "ECDHE-RSA-AES256-GCM-SHA384" }, "http": { "url": "https://nankai.edu.cn/", "status": "HTTP/1.1 403 Forbidden", "http_version": "2", "headers": { "date": "Mon, 10 Aug 2026 16:45:44 GMT", "content-type": "text/html", "connection": "keep-alive", "x-protected-by": "NKSOC" }, "security_checks": { "strict-transport-security": false, "content-security-policy": false, "x-content-type-options": false, "x-frame-options": false, "referrer-policy": false, "permissions-policy": false, "cross-origin-opener-policy": false, "cross-origin-embedder-policy": false, "cross-origin-resource-policy": false }, "server": "", "powered_by": "" }, "webpage": { "url": "https://nankai.edu.cn/", "title": "南开大学教工邮件系统 - 邮箱用户登录", "description": "", "success": true, "error": "", "status": 206 }, "network": { "222.30.45.190": { "success": false, "country": "", "region": "", "city": "", "asn": "", "organization": "", "isp": "" } }, "smtp": { "host": "hzmx01.mxmail.netease.com", "ports": [ { "port": 25, "open": false, "time_ms": 1.1, "banner": "", "error": "Connection refused" }, { "port": 465, "open": false, "time_ms": 27.2, "banner": "", "error": "No connection" }, { "port": 587, "open": false, "time_ms": 27.9, "banner": "220 entmail-hzmx2-aliyun.singapore.163.org ESMTP ready", "error": "No connection" } ] }, "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": 110.87 }