SSL check results of kottbus.de

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Discover if the mail servers for kottbus.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, 13 Aug 2019 20:36:46 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
host2.belogy.de
2a01:4f8:140:4442::2:1
10
supported
host2.belogy.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
11 s
host2.belogy.de
46.4.143.128
10
supported
host2.belogy.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
11 s

Outgoing Mails

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

Certificates

First seen at:

CN=host2.belogy.de

Certificate chain
Subject
Common Name (CN)
  • host2.belogy.de
Alternative Names
  • host2.belogy.de
  • imap.belogy.de
  • mail.belogy.de
  • smtp.belogy.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2019-07-08
Not valid after
2019-10-06
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
2B:5E:D3:4C:BF:C1:B8:A8:67:EA:64:6F:AF:8F:1B:AB:04:91:F8:5B:94:6D:8E:61:B2:BA:78:76:A1:A1:DB:16
SHA1
B4:7E:02:14:AE:92:F1:7F:92:56:84:49:5A:F4:8A:2A:CC:45:E7:6B
X509v3 extensions
subjectKeyIdentifier
  • 11:D4:5A:BF:0E:4D:80:79:15:C9:C0:24:C7:39:3A:DD:04:18:5F:2E
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 : E2:69:4B:AE:26:E8:E9:40:09:E8:86:1B:B6:3B:83:D4:
  • 3E:E7:FE:74:88:FB:A4:8F:28:93:01:9D:DD:F1:DB:FE
  • Timestamp : Jul 8 01:02:05.318 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:94:C3:3D:B0:4D:71:5F:95:02:D7:EF:
  • CD:5B:0E:B6:C9:C5:E5:F6:2A:74:64:D1:CA:A8:AC:85:
  • F4:7F:14:44:08:02:21:00:C5:9B:78:25:A8:9B:88:DC:
  • FE:69:6B:09:3F:1F:CE:0F:2F:9B:BC:E1:A4:E0:3B:EE:
  • 99:22:2E:DD:DD:F6:6C:E4
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 29:3C:51:96:54:C8:39:65:BA:AA:50:FC:58:07:D4:B7:
  • 6F:BF:58:7A:29:72:DC:A4:C3:0C:F4:E5:45:47:F4:78
  • Timestamp : Jul 8 01:02:05.305 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:44:22:D1:EE:26:62:05:2F:86:CA:EF:06:
  • F4:25:31:B8:C9:B3:55:4B:CF:E4:E2:2E:7D:97:43:FD:
  • 4B:40:68:10:02:20:18:AA:62:B6:99:5A:2E:D8:1A:C8:
  • 03:44:AE:6E:44:3C:3C:60:6C:66:E4:A6:C1:8E:16:3E:
  • 9F:24:A9:01:9E:1A