SSL check results of dev-tek.de

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Discover if the mail servers for dev-tek.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 Thu, 23 Mar 2017 17:08:20 +0000

The mailservers of dev-tek.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @dev-tek.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
web01.hosted4u.de
185.188.6.151
10
supported
web01.hosted4u.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
11.0 s
mxb.hosted4u.de
88.99.189.1
20
supported
mxb.hosted4u.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
11.0 s

Outgoing Mails

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

Host TLS Version & Cipher
r1.dev-tek.de (31.214.243.91)
TLSv1.2 AECDH-AES256-SHA
mx1.hosted4u.de (138.68.66.197)
TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384

Certificates

First seen at:

web01.hosted4u.de

Certificate chain
Subject
Common Name (CN)
  • web01.hosted4u.de
Alternative Names
  • web01.hosted4u.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2017-03-11
Not valid after
2017-06-09
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
F7:54:E4:82:A6:E0:B6:83:5F:24:83:0B:EE:87:45:75:6A:86:7F:72:6F:88:A2:BB:62:02:E0:64:00:A0:5C:82
SHA1
C2:60:C6:B1:FE:F2:3C:B7:86:6B:58:7D:8F:5D:E1:37:01:40:CE:D8
X509v3 extensions
subjectKeyIdentifier
  • 72:7B:7F:BA:EC:0B:2C:4F:44:ED:5F:93:D8:2C:69:75:3E:77:3B:06
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
  • User Notice:
  • Explicit Text: This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/
First seen at:

mxb.hosted4u.de

Certificate chain
Subject
Common Name (CN)
  • mxb.hosted4u.de
Alternative Names
  • mxb.hosted4u.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2017-03-17
Not valid after
2017-06-15
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
9F:BC:73:79:C1:36:6C:6F:74:9A:7C:AC:EB:C9:A3:B4:EC:F6:91:2F:50:7D:CC:09:34:D2:C6:98:28:F4:82:C7
SHA1
51:FA:15:BB:03:CE:73:0D:1F:B6:83:49:50:54:F2:E4:9C:7B:A8:3E
X509v3 extensions
subjectKeyIdentifier
  • 11:A1:F4:3C:7A:37:E1:D9:F2:53:D2:C6:95:69:22:6B:8B:72:12:D9
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
  • User Notice:
  • Explicit Text: This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/