DNS Gurus

SSL Verification Bypassed

The server's SSL certificate could not be verified. The analysis was completed using insecure mode. Data may be less reliable.

Reason:

Hostname Mismatch - certificate is issued for autoconfig.dns3.qservers.net, autodiscover.dns3.qservers.net, cpcalendars.dns3.qservers.net, cpcontacts.dns3.qservers.net, dns3.qservers.net, ipv6.dns3.qservers.net, mail.dns3.qservers.net, webdisk.dns3.qservers.net, webmail.dns3.qservers.net, not for webmail.emmanuelmbaka.net

Cached · just now
75/100 SECURITY SCORE

Certificate Information

Subject
CN=dns3.qservers.net
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
December 19, 2025
Valid Until
March 19, 2026 83 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
BC:4C:9F:57:83:D5:1D:0A:5E:B4:8F:6E:EC:32:5A:F9:73:19:CD:AB:17:1F:C4:F8:08:21:1E:F3:91:8D:D9:AE
Alternative Names
11 domains

Security Configuration

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

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • Add X-Content-Type-Options: nosniff
  • • 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