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SECURITY SCORE
Certificate Information
Subject
CN=mail.proposify.com
Issuer
C=US, O=Let's Encrypt, CN=E8
Valid From
December 29, 2025
Valid Until
March 29, 2026
58 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
30:96:0B:9F:A4:BB:6B:3C:9A:3C:F7:CD:DE:79:69:6F:86:84:BA:A3:0F:18:B8:30:7F:A7:B0:D0:E9:E4:13:BC
Alternative Names
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
Missing
Not configured
Content-Security-Policy
Strong
default-src; img-src; script-src; +4 more
default-src 'self'; img-src 'self';script-src 'self' 'sha256-J+Y4l+yfxXd4cYzH9LhXUSHSb7zZu2bgddfCumVZJMo=';object-src 'none';form-action 'none';frame-src 'none';style-src 'self' 'sha256-OU0LTytxyR8kjQ+DRjRCDKhUAKEeH7rb0D5nBWOzRlQ='
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Strict-Transport-Security header with max-age of at least 1 year
- • 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