SSL-Tools

SSL check results of zardo.cnt.br

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Discover if the mail servers for zardo.cnt.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, 15 Jan 2022 02:59:25 +0000

The mailservers of zardo.cnt.br can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @zardo.cnt.br addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.zardo.cnt.br
192.185.216.246
 0
supported
*.zardo.cnt.br
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
41 s

Outgoing Mails

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

Certificates

First seen at:

CN=*.zardo.cnt.br

Certificate chain
  • *.zardo.cnt.br
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R3
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • *.zardo.cnt.br
Alternative Names
  • *.zardo.cnt.br
  • zardo.cnt.br
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R3
validity period
Not valid before
2021-12-02
Not valid after
2022-03-02
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
62:46:B8:FB:48:A3:E9:88:36:D5:26:61:B1:6C:80:24:A3:C7:3D:EA:F6:3B:19:BC:C3:E8:11:CA:DC:C8:AA:39
SHA1
D3:BF:0D:E6:17:EB:3E:1B:91:1A:E3:03:97:EC:13:70:E2:E0:64:3E
X509v3 extensions
subjectKeyIdentifier
  • 9C:49:14:75:A8:45:01:2A:90:D5:AE:BD:D9:BA:15:37:DF:D9:CF:AF
authorityKeyIdentifier
  • keyid:14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
authorityInfoAccess
  • OCSP - URI:http://r3.o.lencr.org
  • CA Issuers - URI:http://r3.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • Policy: 1.3.6.1.4.1.44947.1.1.1
  • CPS: http://cps.letsencrypt.org
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 41:C8:CA:B1:DF:22:46:4A:10:C6:A1:3A:09:42:87:5E:
  • 4E:31:8B:1B:03:EB:EB:4B:C7:68:F0:90:62:96:06:F6
  • Timestamp : Dec 2 06:30:15.617 2021 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:43:02:1F:41:88:C2:A7:B0:99:81:9C:06:D0:25:A6:
  • 8B:D5:0E:12:FF:62:51:11:99:EC:37:C3:57:7E:FB:DC:
  • BE:42:38:02:20:3C:BD:2F:AF:16:29:A0:73:A6:51:D9:
  • E0:42:CB:18:B3:AB:42:2A:AF:3D:91:3E:E1:31:BF:83:
  • 76:EB:1D:35:A7
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 46:A5:55:EB:75:FA:91:20:30:B5:A2:89:69:F4:F3:7D:
  • 11:2C:41:74:BE:FD:49:B8:85:AB:F2:FC:70:FE:6D:47
  • Timestamp : Dec 2 06:30:15.639 2021 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:25:15:97:50:91:70:06:A9:25:2B:D7:1F:
  • E2:EC:25:78:16:77:AC:5E:0D:2C:91:17:1C:8B:22:CE:
  • 1B:BB:EB:FE:02:21:00:C1:B6:95:45:62:73:FE:32:51:
  • 76:97:EE:7A:E1:F5:F9:EC:DE:B1:63:4F:6D:51:7B:6D:
  • BC:69:E1:8F:08:F8:30