SSL check results of k2-solutions.eu

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Discover if the mail servers for k2-solutions.eu 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

Report created Mon, 03 Aug 2020 01:10:53 +0000

The mailservers of k2-solutions.eu can be reached through an encrypted connection.

However, we found problems that may affect the security.

Servers

Incoming Mails

These servers are responsible for incoming mails to @k2-solutions.eu addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.k2-solutions.eu
88.99.69.61
10
supported
downloads.k2-solutions.eu
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 @k2-solutions.eu address so far. Test mail delivery

Certificates

First seen at:

CN=downloads.k2-solutions.eu

Certificate chain
  • downloads.k2-solutions.eu
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
    • Expired
    • Unknown Authority

      Let's Encrypt Authority X3
Subject
Common Name (CN)
  • downloads.k2-solutions.eu
Alternative Names
  • downloads.k2-solutions.eu
  • k2-solutions.eu
  • mail.k2-solutions.eu
  • www.k2-solutions.eu
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2019-12-28
Not valid after
2020-03-27
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
7F:5A:92:41:E1:6A:6B:AF:8B:8C:49:D3:E9:AA:14:67:92:3E:E8:8C:D8:DF:F4:42:88:64:AD:0A:96:10:45:37
SHA1
5E:9C:83:DD:AF:F1:A9:0B:97:91:77:B6:24:43:93:4F:DD:66:70:58
X509v3 extensions
subjectKeyIdentifier
  • 45:C4:3B:46:66:5A:EE:A3:F0:12:2B:07:81:13:A3:3D:25:8A:B5:96
authorityKeyIdentifier
  • keyid:A8:4A:6A:63:04:7D:DD:BA:E6:D1:39:B7:A6:45:65:EF:F3:A8:EC:A1
authorityInfoAccess
  • OCSP - URI:http://ocsp.int-x3.letsencrypt.org
  • CA Issuers - URI:http://cert.int-x3.letsencrypt.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 : 5E:A7:73:F9:DF:56:C0:E7:B5:36:48:7D:D0:49:E0:32:
  • 7A:91:9A:0C:84:A1:12:12:84:18:75:96:81:71:45:58
  • Timestamp : Dec 28 21:40:41.326 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:A7:DE:5D:51:DA:D4:24:03:B2:DE:6C:
  • 6F:22:55:45:24:A2:AA:D6:36:A3:64:94:14:56:FB:14:
  • D2:C6:C0:8E:54:02:20:04:6C:6E:33:85:3D:1A:76:E9:
  • 1F:A2:6F:7B:7A:D4:B1:4A:A4:25:CE:22:EC:1C:96:A5:
  • 17:AC:0D:F5:E4:97:66
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : B2:1E:05:CC:8B:A2:CD:8A:20:4E:87:66:F9:2B:B9:8A:
  • 25:20:67:6B:DA:FA:70:E7:B2:49:53:2D:EF:8B:90:5E
  • Timestamp : Dec 28 21:40:41.311 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:F3:AD:9A:77:42:7E:86:0A:4B:E3:8C:
  • 2C:2C:1E:35:96:B2:98:C7:3B:68:7F:ED:C9:03:7C:60:
  • D7:1D:DE:39:C5:02:21:00:C4:DC:64:4E:A9:99:AF:92:
  • AD:74:93:33:3D:3F:A2:23:ED:55:68:1B:2B:2A:38:D8:
  • C8:A0:4E:55:32:68:14:08