SSL-Tools

SSL check results of cottonconditioners.com.br

NEW You can also bulk check multiple servers.

Discover if the mail servers for cottonconditioners.com.br can be reached through a secure connection.

To establish a secure connection a mail server has to offer STARTTLS (SSL), a trustworthy SSL certificate, support for the Diffie-Hellman-Algorithm to guarantee Perfect Forward Secrecy and must not be vulnerable against the Heartbleed attack. Futhermore we recommend using end-to-end encryption with GnuPG.

Summary

JSON Refresh

Report created Sat, 29 Mar 2025 10:08:21 +0000

The mailservers of cottonconditioners.com.br can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @cottonconditioners.com.br addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
smtprin2.f1.k8.com.br
187.73.32.132
 10
supported
*.f1.k8.com.br
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
12 s

Outgoing Mails

We have not received any emails from a @cottonconditioners.com.br address so far. Test mail delivery

Certificates

First seen at:

CN=*.f1.k8.com.br

Certificate chain
  • *.f1.k8.com.br
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R10
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • *.f1.k8.com.br
Alternative Names
  • *.f1.k8.com.br
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R10
validity period
Not valid before
2025-02-22
Not valid after
2025-05-23
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
3E:C6:23:0C:2D:05:C2:F2:18:D5:F4:45:62:7F:F2:F4:C3:E0:D1:DD:55:38:8B:94:C2:88:9E:F7:7E:B0:AF:A6
SHA1
4B:BF:AF:42:82:4F:3C:3F:CF:5D:C2:63:AD:4E:F9:8E:E5:C0:C4:6A
X509v3 extensions
subjectKeyIdentifier
  • 11:EF:7A:40:4D:A1:3C:83:77:F9:71:F1:CD:4A:82:6A:F4:F1:79:D2
authorityKeyIdentifier
  • keyid:BB:BC:C3:47:A5:E4:BC:A9:C6:C3:A4:72:0C:10:8D:A2:35:E1:C8:E8
authorityInfoAccess
  • OCSP - URI:http://r10.o.lencr.org
  • CA Issuers - URI:http://r10.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : A2:E3:0A:E4:45:EF:BD:AD:9B:7E:38:ED:47:67:77:53:
  • D7:82:5B:84:94:D7:2B:5E:1B:2C:C4:B9:50:A4:47:E7
  • Timestamp : Feb 22 11:01:13.178 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:86:26:00:8A:30:4E:32:87:0A:90:CD:
  • 00:B0:A0:56:35:E9:11:E5:96:CC:78:AB:87:A4:CA:70:
  • 91:10:17:17:DA:02:20:16:BC:B0:20:0B:30:89:07:8B:
  • 42:51:8F:35:0C:26:83:08:0D:C9:C8:39:B2:83:F6:EA:
  • 7D:CC:09:0B:A0:26:3B
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 4E:75:A3:27:5C:9A:10:C3:38:5B:6C:D4:DF:3F:52:EB:
  • 1D:F0:E0:8E:1B:8D:69:C0:B1:FA:64:B1:62:9A:39:DF
  • Timestamp : Feb 22 11:01:13.171 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:16:86:25:57:F5:A2:51:40:C9:2E:7B:24:
  • F3:9B:27:C8:BF:5F:9C:35:94:56:DA:F7:7D:8D:85:13:
  • 7A:D2:8C:B3:02:20:6A:CB:F6:70:C9:65:B6:17:0E:36:
  • 79:E2:27:79:37:B4:64:69:A9:51:A5:5C:52:BD:63:90:
  • A5:E1:2A:E0:A0:AA