Open Cached · just now
85/100 SECURITY SCORE

Certificate Information

Subject
CN=mailexmax.com
Issuer
C=US, O=Google Trust Services, CN=WR3
Valid From
October 10, 2025
Valid Until
January 08, 2026 59 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
F8:DE:9A:2A:8C:AE:E2:CC:98:31:EB:A1:F0:EF:FF:86:E4:56:19:52:90:C7:20:07:5D:5F:30:EC:0B:EA:F0:61
Alternative Names

Security Configuration

TLS Protocols
TLS 1.2 TLS 1.3
Forward Secrecy
Supported (Modern clients use PFS)

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=7889238
Content-Security-Policy
Weak
block-all-mixed-content; frame-ancestors; upgrade-insecure-requests
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • Significantly strengthen CSP directives
  • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • Consider adding Permissions-Policy to control browser features

CAA Records (Certificate Authority Authorization)

CAA Records
Not Configured (Any CA can issue certificates)
CAA Issues
  • No CAA records configured - any CA can issue certificates
Recommendations
  • Implement CAA records to restrict which CAs can issue certificates for your domain
  • This adds an extra layer of security against unauthorized certificate issuance
  • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
  • Consider adding 'iodef' record to receive security incident reports

Subject Alternative Names

100 domains
gyronetics.at

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