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SECURITY SCORE
Certificate Information
Subject
CN=docs.emaildelivery.com
Issuer
C=US, O=Google Trust Services, CN=WE1
Valid From
January 11, 2026
Valid Until
April 11, 2026
87 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA256
SHA-256 Fingerprint
55:54:2B:8B:61:98:E9:C6:12:E4:EF:C7:E2:85:3F:5B:DC:FA:65:21:87:6C:11:63:6E:E5:69:15:50:6A:7E:EF
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=31536000
Content-Security-Policy
Basic
default-src; script-src; style-src; +8 more
default-src 'self' *; script-src 'self' 'unsafe-inline' 'unsafe-eval' *; style-src 'self' 'unsafe-inline' blob: *; img-src * 'self' blob: data:; connect-src *; font-src *; frame-src *; object-src 'none'; base-uri 'self' https://static-2v.gitbook.com; form-action 'self' https://static-2v.gitbook.com *; frame-ancestors https: ;
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer-when-downgrade
Permissions-Policy
Missing
Not configured
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
- • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
- • Consider adding Permissions-Policy to control browser features
CAA Records (Certificate Authority Authorization)
CAA Records
Configured
(Restricts certificate issuance)
Current Issuer
Authorized
(Matches CAA policy)
Authorized CAs
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