🌐DNS
1 A · 4 MX · 3 NS · 1 SOA · 12 TXT
🔒SSL/TLS
Let's Encrypt · TLSv1.2 · expires in 53d · 2 SANs
✉️Email Auth
SPF ✓ · DKIM ✗ · DMARC ✗ (p=none)
💻Tech Stack
Host: RTL Technology GmbH · Email: Self-hosted · Express.js
📡HTTP
1 redirect → 200 · HSTS ✓ · CSP ✓ · X-Frame ✓ · Nosniff ✓
🛡️Security
C (155/225) · 1 critical · 3 high
⚠️Threats
risk: medium · 1 recommendation(s)
📈Deliverability
B (83/100) · 4 MX · 4 IPs · 3 issue(s)
🔍Subdomains
2 found · 113 answered — forum, www