SSL check results of kuschku.de

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Discover if the mail servers for kuschku.de 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 Tue, 03 Dec 2019 11:24:39 +0000

The mailservers of kuschku.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @kuschku.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
kuschku.de
2a01:4f8:160:1012::2
10
supported
kuschku.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s
kuschku.de
176.9.136.3
10
supported
kuschku.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s

Outgoing Mails

We have received emails from these servers with @kuschku.de sender addresses. Test mail delivery

Host TLS Version & Cipher
kuschku.de (176.9.136.3)
TLSv1.3 TLS_AES_256_GCM_SHA384

Certificates

First seen at:

CN=kuschku.de

Certificate chain
Subject
Common Name (CN)
  • kuschku.de
Alternative Names
  • justjanne.de
  • kuschku.de
  • mail.kuschku.de
  • quasseldroid.info
  • services.kuschku.de
  • spam.kuschku.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2019-11-08
Not valid after
2020-02-06
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
69:DB:36:AB:9A:E4:A1:0A:D0:A4:1F:6E:78:BF:01:76:D0:FD:2D:45:69:1B:77:F5:BD:CA:57:B9:B4:71:2A:97
SHA1
FA:83:7A:EE:69:9E:BF:6F:C6:B4:9C:98:1D:FF:D8:21:A0:53:06:64
X509v3 extensions
subjectKeyIdentifier
  • 4F:47:2B:85:FC:22:86:CF:C3:D7:A7:F4:CA:72:46:4F:45:2B:7A:C4
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 : Nov 8 13:44:45.935 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:54:E6:24:E0:A6:B4:EC:87:E9:D7:5C:82:
  • 76:47:C1:D9:B1:92:C9:75:F2:3E:5F:35:D8:D7:2D:C0:
  • 73:6F:68:BF:02:21:00:C3:46:75:62:C5:C5:E2:9D:FF:
  • BB:4F:3E:DC:E8:F9:88:09:AB:A6:0B:BA:2B:1D:78:3A:
  • 3D:96:02:1C:13:10:22
  • 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 : Nov 8 13:44:45.919 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:6B:43:4D:B6:5C:E6:E9:27:26:2D:2D:5F:
  • 7C:FA:1F:E6:DE:54:A3:0D:9F:D9:5D:18:B2:0F:07:77:
  • 09:51:F6:70:02:20:56:19:78:A8:02:CE:68:E0:B5:2C:
  • 1C:09:32:23:65:6C:96:1F:44:E6:06:0E:51:EB:D9:81:
  • D8:A5:31:51:9E:1F