SSL check results of dosb.de

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Discover if the mail servers for dosb.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 Fri, 21 Aug 2020 17:03:16 +0000

The mailservers of dosb.de 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 @dosb.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mx1.hc828-55.c3s2.iphmx.com
68.232.139.53
10
supported
*.hc828-55.c3s2.iphmx.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
13 s
mx1.hc828-55.c3s2.iphmx.com
68.232.150.41
10
supported
*.hc828-55.c3s2.iphmx.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
13 s
mx2.hc828-55.c3s2.iphmx.com
68.232.150.41
10
supported
*.hc828-55.c3s2.iphmx.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
12 s
mx2.hc828-55.c3s2.iphmx.com
68.232.139.53
10
supported
*.hc828-55.c3s2.iphmx.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
12 s

Outgoing Mails

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

Certificates

First seen at:

emailAddress=stbu-dcops@cisco.com,CN=*.hc828-55.c3s2.iphmx.com,OU=Security Technology Business Unit,O=Cisco Systems\, Inc.,L=San Bruno,ST=California,C=US

Certificate chain
  • *.hc828-55.c3s2.iphmx.com (Certificate is self-signed.)
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Unknown Authority

Subject
Country (C)
  • US
State (ST)
  • California
Locality (L)
  • San Bruno
Organization (O)
  • Cisco Systems, Inc.
Organizational Unit (OU)
  • Security Technology Business Unit
Common Name (CN)
  • *.hc828-55.c3s2.iphmx.com
Email
  • stbu-dcops@cisco.com
Issuer

Certificate is self-signed.

validity period
Not valid before
2018-04-13
Not valid after
2038-04-08
Fingerprints
SHA256
4F:48:C3:D0:6A:B4:53:75:B2:C1:93:D9:84:25:34:90:AC:3F:CC:0E:7B:37:79:80:F9:DE:9A:24:6E:31:4E:B4
SHA1
8A:96:FF:F5:F0:33:2C:D1:DB:BF:3E:E9:3F:52:5C:04:A1:8A:CF:F2
X509v3 extensions
subjectKeyIdentifier
  • 47:BB:98:43:CD:9E:5B:8A:F7:2F:FE:A3:84:8E:A7:64:10:6F:A0:90
authorityKeyIdentifier
  • keyid:47:BB:98:43:CD:9E:5B:8A:F7:2F:FE:A3:84:8E:A7:64:10:6F:A0:90