🌐DNS
10 A · 2 MX · 2 NS · 1 PTR · 1 SOA
🔒SSL/TLS
DigiCert Inc · TLSv1.3 · expires in 72d · 2 SANs
✉️Email Auth
SPF ✓ · DKIM ✗ · DMARC ✗ (p=none)
💻Tech Stack
Host: CHINA UNICOM China169 Backbone · Email: Self-hosted
📡HTTP
1 redirect → 200 · HSTS ✓ · CSP ✓ · X-Frame ✓ · Nosniff ✓
🛡️Security
D (110/215) · 2 critical · 3 high
⚠️Threats
risk: medium · 1 recommendation(s)
📈Deliverability
F (28/90) · 0 MX · 0 IPs · 4 issue(s)
🔍Subdomains
8 found · 92 answered (20 timed out) — autodiscover, imap, m, mail, pop, smtp +2 more