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SECURITY SCORE
Certificate Information
Subject
CN=mail.sutton.com
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
December 07, 2025
Valid Until
March 07, 2026
49 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
02:37:E9:AD:2E:F7:77:3E:46:AA:CE:9F:08:47:CA:34:0C:8C:D2:B9:E2:68:F5:01:BE:EA:1C:39:25:6D:32:D2
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=64072000; includeSubDomains; preload
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Content-Security-Policy header to prevent XSS attacks
- • 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
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
Subject Alternative Names
86 domains
mail.sutton.com
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mail.ajtelecoms.co.za
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mail.alfronca.com.ve
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mail.bloomstrom.dev
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workplace.carinae.com.ar
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webmail.copack.com.eg
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support.conexial.net
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correo.jrci.com.co
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login.passionfoodsinc.us
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mymail.tmcloud.pingker.com
mail.plancredi.com
mail.sanasofteg.com
mail.sfi-networks.com
mail.shanedubois.com
mail.slanhu.com
mail.solaraatskyview.ca
mail.speedyweb.org
mail.strategic-corp.com
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mail.teamexpressme.com
mail.trout-bum.org
mail.trustactics.com
mail.tussor.com.br
mail.up-milano.it
mail.uwin-power.com
mail.vanusagomessemijoias.com.br
mail.vote-david.com
mail.walloro.com
mail.ydma.group
Other domains in certificate