🌐DNS
1 A · 1 MX · 2 NS · 1 SOA · 4 TXT
🔒SSL/TLS
DigiCert Inc · TLSv1.2 · expires in 180d · 6 SANs
✉️Email Auth
SPF ✓ · DKIM ✓ · DMARC ✓ (p=reject)
🔐DNSSEC
signed · valid chain of trust
💻Tech Stack
Host: 16 Au Co, Tan Son Nhi Ward, Tan Phu District, Ho Chi Minh city (EVNSPC Building) · Email: Self-hosted · IIS · ASP.NET
📡HTTP
1 redirect → 200 · HSTS ✗ · CSP ✗ · X-Frame ✓ · Nosniff ✗
🛡️Security
C (145/215) · 1 critical · 2 high
📈Deliverability
A+ (96/100) · 1 MX · 1 IPs · 1 issue(s)
🔍Subdomains
2 found · 112 answered — mail, www