SSL-Tools

SSL check results of fourbytes.it

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Discover if the mail servers for fourbytes.it 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 Wed, 17 Apr 2024 15:04:37 +0000

The mailservers of fourbytes.it can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @fourbytes.it addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
esva2.sincretech.it
176.221.55.134
 10
supported
esva2.sincretech.it
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s
esva.sincretech.it
109.233.123.207
 20
supported
esva.sincretech.it
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s

Outgoing Mails

We have not received any emails from a @fourbytes.it address so far. Test mail delivery

Certificates

First seen at:

CN=esva2.sincretech.it

Certificate chain
  • esva2.sincretech.it
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R3
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • esva2.sincretech.it
Alternative Names
  • esva2.sincretech.it
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R3
validity period
Not valid before
2024-02-20
Not valid after
2024-05-20
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
7A:5D:F0:36:49:C9:8C:1E:B5:66:B5:A0:18:D1:46:A0:73:63:8C:DC:3E:A0:95:41:53:94:00:BC:8A:BE:61:81
SHA1
76:08:5C:CE:7A:EF:90:62:B6:82:8D:63:E4:AA:40:23:1D:41:D5:CE
X509v3 extensions
subjectKeyIdentifier
  • 45:72:E0:E3:E9:16:DB:C4:6F:37:8C:8A:E4:2F:30:56:C7:B1:B9:D9
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
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 48:B0:E3:6B:DA:A6:47:34:0F:E5:6A:02:FA:9D:30:EB:
  • 1C:52:01:CB:56:DD:2C:81:D9:BB:BF:AB:39:D8:84:73
  • Timestamp : Feb 20 01:47:38.790 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:00:90:74:C2:A5:04:04:5A:68:8A:10:3C:
  • F4:AF:0C:4B:5F:80:5D:2D:FB:60:07:6B:19:C6:FB:42:
  • B7:1B:EA:90:02:21:00:E4:25:71:0A:74:87:94:7C:CC:
  • 72:14:A0:26:65:DB:C1:2D:A3:BE:60:58:FA:CF:82:E2:
  • 6F:BD:B5:E9:33:D7:6E
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 76:FF:88:3F:0A:B6:FB:95:51:C2:61:CC:F5:87:BA:34:
  • B4:A4:CD:BB:29:DC:68:42:0A:9F:E6:67:4C:5A:3A:74
  • Timestamp : Feb 20 01:47:39.010 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:AA:1A:05:73:02:6B:11:28:8A:A4:A8:
  • 85:3E:01:24:E5:07:73:FC:8E:91:B5:72:F6:2F:68:5F:
  • 5A:1B:B2:BC:7E:02:21:00:D9:CF:EF:D9:7A:46:28:0C:
  • 8C:38:E3:D3:81:BD:BF:F1:33:EB:12:62:23:55:EC:34:
  • 04:98:81:0A:69:C9:93:CA
First seen at:

CN=esva.sincretech.it

Certificate chain
  • esva.sincretech.it
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R3
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • esva.sincretech.it
Alternative Names
  • esva.sincretech.it
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R3
validity period
Not valid before
2024-02-22
Not valid after
2024-05-22
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
58:B4:CB:BB:1D:EE:9F:FB:12:5C:A8:B6:79:05:BD:6B:82:06:D4:A7:D6:56:08:0D:8D:1E:E6:77:21:B8:1B:53
SHA1
F5:9C:E1:CB:7B:D7:B0:13:68:D5:1F:8B:24:85:9C:1B:62:CB:3B:83
X509v3 extensions
subjectKeyIdentifier
  • 05:F7:E4:9D:A2:3E:C0:A1:16:CC:41:90:8E:26:86:E7:A3:B3:20:41
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
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 48:B0:E3:6B:DA:A6:47:34:0F:E5:6A:02:FA:9D:30:EB:
  • 1C:52:01:CB:56:DD:2C:81:D9:BB:BF:AB:39:D8:84:73
  • Timestamp : Feb 22 01:50:11.803 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:CE:C0:B3:5C:43:5A:9B:05:A1:3B:78:
  • 89:E6:9B:38:B0:DE:29:FB:22:2A:F2:4D:FB:23:97:AE:
  • CE:16:C5:1E:CB:02:20:75:C9:8C:87:BC:78:C7:C7:95:
  • 2D:A2:A4:3F:F2:97:94:91:FA:15:B5:59:08:86:BC:41:
  • 98:D4:4C:42:A6:DD:D5
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 3B:53:77:75:3E:2D:B9:80:4E:8B:30:5B:06:FE:40:3B:
  • 67:D8:4F:C3:F4:C7:BD:00:0D:2D:72:6F:E1:FA:D4:17
  • Timestamp : Feb 22 01:50:12.311 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:9F:91:E8:8D:84:AC:C6:38:ED:F6:3D:
  • C8:95:18:E8:90:06:28:BA:1E:03:D3:1D:05:34:FA:61:
  • 2A:76:16:D6:2D:02:20:4A:02:50:14:CF:EB:77:E4:04:
  • 50:73:21:9F:19:E8:3A:D4:BC:04:D6:DB:5F:18:B6:7A:
  • 77:8A:D6:68:F7:AB:9B