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 autodiscover.wwwnl1-ts107.a2hosting.com, cpanel.wwwnl1-ts107.a2hosting.com, cpcalendars.wwwnl1-ts107.a2hosting.com, cpcontacts.wwwnl1-ts107.a2hosting.com, mail.wwwnl1-ts107.a2hosting.com, webdisk.wwwnl1-ts107.a2hosting.com, webmail.wwwnl1-ts107.a2hosting.com, www.wwwnl1-ts107.a2hosting.com, wwwnl1-ts107.a2hosting.com, not for mail.nl1-ts107.a2hosting.com

Cached · just now
85/100 SECURITY SCORE

Certificate Information

Subject
CN=mail.wwwnl1-ts107.a2hosting.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
November 03, 2025
Valid Until
February 01, 2026 41 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
7B:74:F5:5E:FF:19:B3:88:9F:C1:23:32:A8:37:C0:8A:37:6F:13:7B:46:43:5E:95:F9:DB:65:B0:CB:68:EC:51
Alternative Names
9 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
Good
max-age=63072000; includeSubDomains
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Consider adding 'preload' to HSTS for maximum security
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • 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