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SECURITY SCORE
Certificate Information
Subject
CN=mail.mmoo.biz
Issuer
C=US, O=Let's Encrypt, CN=E8
Valid From
January 22, 2026
Valid Until
April 22, 2026
81 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
CA:8D:63:DE:B2:8D:18:B0:05:5C:C0:C1:30:F2:D2:51:2E:7D:10:19:00:00:9F:54:F9:8E:DD:5D:D2:F3:7F:1E
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
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Basic
default-src; script-src; style-src; +9 more
default-src 'self' data: blob: cid:; script-src 'self' 'unsafe-inline' 'unsafe-eval' *.zextras.tools *.jsdelivr.net www.googletagmanager.com www.google-analytics.com; style-src * 'unsafe-inline'; img-src * data: blob: cid:; font-src * data:; connect-src 'self' *.zextras.tools *.jsdelivr.net www.google-analytics.com; media-src * blob: data: cid:; object-src 'self'; child-src 'self' blob: data: cid:; frame-src 'self' blob: data: cid:; frame-ancestors 'self'; form-action 'self';
X-Frame-Options
Good
sameorigin
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
same-origin
Permissions-Policy
Present
geolocation=(self), microphone=(self)
Recommendations
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
CAA Records (Certificate Authority Authorization)
CAA Records
Configured
(Restricts certificate issuance)
Current Issuer
Authorized
(Matches CAA policy)
Wildcard CAs
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts