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:

Invalid Certificate - the server's certificate is malformed or invalid

Open Cached · just now
69/100 SECURITY SCORE

Certificate Information

Subject
C=US, ST=California, L=Mountain View, O=SmugMug, CN=i-054de40b9ee63ea9e.smugmug.net
Issuer
C=US, ST=California, L=Mountain View, O=SmugMug, CN=i-054de40b9ee63ea9e.smugmug.net
Valid From
November 11, 2025
Valid Until
November 11, 2026 343 days
Public Key
ECDSA 256 bit (P-256) Adequate
Signature Algorithm
ECDSA-SHA256
SHA-256 Fingerprint
6A:48:96:1E:A5:B5:EA:E5:83:2B:9E:D4:A1:5E:AC:99:89:45:79:FE:AB:3B:B9:C0:39:9B:BE:2F:D0:CB:1C:EB

Security Configuration

TLS Protocols
TLS 1.2
Forward Secrecy
Limited (Check cipher configuration)
Warnings
  • • TLS 1.3 is not supported (recommended)

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=259200; includeSubDomains
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • 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
Configured (Restricts certificate issuance)
Current Issuer
Not Authorized (Potential misconfiguration)
Authorized CAs
letsencrypt.org
CAA Issues
  • • CRITICAL: Current certificate issuer 'C=US, ST=California, L=Mountain View, O=SmugMug, CN=i-054de40b9ee63ea9e.smugmug.net' is NOT authorized by CAA records. Authorized CAs: letsencrypt.org
Recommendations
  • • Consider using critical flag (flags=128) for stricter CAA enforcement
  • • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts
  • • Consider adding 'issuewild' records to control wildcard certificate issuance