🌐DNS
1 A · 4 MX · 4 NS · 1 PTR · 1 SOA · 12 TXT
🔒SSL/TLS
Hellenic Academic and Research Institutions CA · TLSv1.3 · expires in 142d · 18 SANs
✉️Email Auth
SPF ✓ · DKIM ✗ · DMARC ✗ (p=none)
💻Tech Stack
Host: Technische Universitat Wien · Email: Self-hosted
📡HTTP
2 redirect → 200 · HSTS ✓ · CSP ✗ · X-Frame ✓ · Nosniff ✓
🛡️Security
C (150/215) · 1 critical · 2 high
📈Deliverability
A (83/90) · 4 MX · 4 IPs · 3 issue(s)
🔍Subdomains
7 found · 112 answered — autoconfig, autodiscover, exchange, mail, media, webmail +1 more