📄WHOIS
Deutsche Telekom AG · registered 24 years ago · expires 10/24/2026
🌐DNS
1 A · 2 MX · 2 NS · 1 PTR · 1 SOA · 9 TXT · 1 AAAA
🔒SSL/TLS
Let's Encrypt · TLSv1.3 · expires in 76d · 5 SANs
✉️Email Auth
SPF ✓ · DKIM ✓ · DMARC ✗ (p=none)
💻Tech Stack
Host: 23M GmbH · Email: Self-hosted · nginx
📡HTTP
3 redirect → 200 · HSTS ✗ · CSP ✓ · X-Frame ✓ · Nosniff ✓
🛡️Security
C (150/215) · 1 critical · 2 high
⚠️Threats
risk: medium · 1 recommendation(s)
📈Deliverability
A (93/100) · 2 MX · 4 IPs · 2 issue(s)
🔍Subdomains
5 found · 107 answered (5 timed out) — imap, mail, static, webmail, www