🌐DNS
1 A · 4 MX · 6 NS · 1 SOA · 3 TXT
🔒SSL/TLS
DigiCert Inc · TLSv1.3 · expires in 97d · 2 SANs
✉️Email Auth
SPF ✓ · DKIM ✓ · DMARC ✗ (p=quarantine)
💻Tech Stack
Host: SysEleven GmbH · Email: Self-hosted · nginx
📡HTTP
1 redirect → 200 · HSTS ✓ · CSP ✓ · X-Frame ✗ · Nosniff ✗
🛡️Security
C (150/215) · 1 critical · 2 high
📈Deliverability
A+ (96/100) · 4 MX · 5 IPs · 2 issue(s)
🔍Subdomains
wildcard DNS — every guessed name resolves
📚Web Archive
first snapshot 1998-05-13 · 28y archived