SSL-Tools

SSL check results of blankenese.org

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Discover if the mail servers for blankenese.org 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

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Report created Fri, 22 Oct 2021 14:42:00 +0000

We can not guarantee a secure connection to the mailservers of blankenese.org!

Please contact the operator of blankenese.org and ask him or her to solve this problem. This result stays accessible under the following address:

/mailservers/blankenese.org

Servers

Incoming Mails

These servers are responsible for incoming mails to @blankenese.org addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.blankenese.org
212.12.52.171
 10
supported
kiwi.kcs.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
mail.kcs.de
192.76.134.40
Results incomplete
20
unsupported
not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s

Outgoing Mails

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

Certificates

First seen at:

CN=kiwi.kcs.de,OU=Data Center,O=KCS,L=Berlin,ST=Germany,C=DE

Certificate chain
  • kiwi.kcs.de (Certificate is self-signed.)
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch
    • Unknown Authority
Subject
Country (C)
  • DE
State (ST)
  • Germany
Locality (L)
  • Berlin
Organization (O)
  • KCS
Organizational Unit (OU)
  • Data Center
Common Name (CN)
  • kiwi.kcs.de
Issuer

Certificate is self-signed.

validity period
Not valid before
2019-04-11
Not valid after
2029-04-08
Fingerprints
SHA256
7C:C3:DF:22:FE:0B:E5:83:B3:E3:51:40:93:89:06:3F:34:57:8D:8E:97:BC:A4:E2:EF:C1:09:69:FA:1F:EB:34
SHA1
50:80:CA:50:17:8E:94:29:5C:2A:4E:AB:FD:8E:96:BA:CC:10:60:09
X509v3 extensions
subjectKeyIdentifier
  • B4:95:AC:98:7D:62:D4:40:31:A9:2B:01:D0:2C:22:84:AB:9E:96:94
authorityKeyIdentifier
  • keyid:B4:95:AC:98:7D:62:D4:40:31:A9:2B:01:D0:2C:22:84:AB:9E:96:94