DNS Gurus
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11 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Good
max-age=31536000; includeSubDomains;
Content-Security-Policy
Weak
frame-ancestors Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin
Permissions-Policy
Present
geolocation=(self "https://mail.spongepowered.org/webmail/")
Recommendations
  • • Consider adding 'preload' to HSTS for maximum security
  • • Significantly strengthen CSP directives
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking

Performance Headers

Connection
Performance
close

Caching Headers

No caching headers found

Content Headers

Content-Type
Content
text/html; charset=UTF-8

Server Headers

Server
Server
IceWarp/14.3.0.8
X-Version
Server
14.3.0.8

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Date
Other
Fri, 07 Aug 2026 17:25:55 GMT
X-Ua-Compatible
Other
IE=edge

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching