🌐DNS
1 A · 1 MX · 4 NS · 1 PTR · 1 SOA · 5 TXT
🔒SSL/TLS
Let's Encrypt · TLSv1.3 · expires in 75d · 2 SANs
✉️Email Auth
SPF ✓ · DKIM ✗ · DMARC ✗ (p=none)
💻Tech Stack
Host: University of Warsaw · Email: Microsoft 365 · nginx
📡HTTP
2 redirect → 200 · HSTS ✓ · CSP ✓ · X-Frame ✓ · Nosniff ✗
🛡️Security
C (150/215) · 1 critical · 2 high
⚠️Threats
risk: low · 1 recommendation(s)
📈Deliverability
A (77/90) · 1 MX · 8 IPs · 5 issue(s)
🔍Subdomains
2 found · 112 answered — www, www2