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SECURITY SCORE
Certificate Information
Subject
CN=mx.alkacon.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
September 28, 2025
Valid Until
December 27, 2025
33 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
76:45:8E:7B:FA:0B:81:A6:A3:8A:3D:0F:1E:09:5D:1E:A9:2E:C5:0A:BB:B8:2B:0B:26:72:07:7C:05:8E:EB:6B
Alternative Names
Security Configuration
TLS Protocols
TLS 1.0
TLS 1.1
TLS 1.2
Forward Secrecy
Limited
(Check cipher configuration)
Warnings
- • TLS 1.3 is not supported (recommended)
- • TLS 1.1 is deprecated and should be disabled
- • TLS 1.0 is deprecated and should be disabled
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