Cached · just now
89/100 SECURITY SCORE

Certificate Information

Subject
CN=mail.sutton.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
February 05, 2026
Valid Until
May 06, 2026 82 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
76:BA:5E:31:30:62:FB:A7:76:F6:77:40:A6:00:B8:E3:E6:CD:E0:C9:7B:09:00:5C:49:14:C0:8F:3A:B6:12:16
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)
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

85 domains
mail.dam.sg

Other domains in certificate

mail.accurate-business.com
mail.ajtelecoms.co.za
mail.albertlau.com
mail.alfronca.com.ve
mail.ammoshopper.com
mail.bcecombustion.com
mail.bellamkonda.com
mail.bloomstrom.dev
mail.bodesdoasfaltoabc.com.br
mail.c3d.ae
workplace.carinae.com.ar
mail.cermont.com.br
mail.certificamais.com
mail.ciaran.be
mail.climatizate.cl
mail.netsoft.com.ec
webmail.copack.com.eg
mail.hintat.com.hk webmail.wscpa.com.hk
correo.comulseb.coop
support.conexial.net
webmail.consultoriodapele.com.br
mail.consults.la
mail.crispanhotel.com
mail.cross-control.pe
mail.delugedev.space
mail.derrikelias.com
mail.dg.com.pe
mail.estiloah.com.br
mail.forever6ixapparel.com
mail.giraffedoc.com
mail.gklcanada.com
mail.wra.go.ke
mail.sscaa.eservices.gov.ss
email.healthpals.co
mail.heartbreakville.com
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mail.highdatamx.com
mail.horizitech.com
mail.imobiliariaportalab.com.br
mail.infosecltd.com
mail.invest-zone.io
mail.jefferynorman.com
mail.jimenezhidalgo.es
correo.jrci.com.co
mail.loveyourneighborministries.com
webmail.margramar.com.br
mail.mbhassan.com
mail.mecfps.com
mail.mgbi.net
mail.mkenterprise.mx
mail.mugdock.com
mail.munchads.com
mail.myfishmail.com
mail.mypeopleapps.com
mail.nextgenitad.com
mail.onionvpn.com
mail.orbiqon.com
mail.amson.org.pk
mail.parceldigital.com
login.passionfoodsinc.us
mail.pekh.com.br
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
mail.strictlyspeaking.org
mail.sutton.com
mail.syllogistic.org
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