SSL-Tools

SSL check results of sudkamp.org

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Discover if the mail servers for sudkamp.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 Wed, 16 Sep 2020 08:09:14 +0000

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

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

/mailservers/sudkamp.org

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.sudkamp.org
37.120.169.78
 0
supported
postfix.sudkamp.org
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
15 s
mx0.mail.ovh.net
178.33.252.245
Results incomplete
1
supported
not checked
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
7 s
mx1.mail.ovh.net
188.165.36.237
Results incomplete
5
supported
not checked
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
7 s

Outgoing Mails

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

Certificates

First seen at:

subjectAltName=DNS.1=postfix.sudkamp.org,CN=postfix.sudkamp.org,O=mailcow,L=mailcow,ST=mailcow,C=ZZ

Certificate chain
  • postfix.sudkamp.org (Certificate is self-signed.)
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch
    • Expired
    • Unknown Authority
Subject
Country (C)
  • ZZ
State (ST)
  • mailcow
Locality (L)
  • mailcow
Organization (O)
  • mailcow
Common Name (CN)
  • postfix.sudkamp.org
subjectAltName
  • DNS.1=postfix.sudkamp.org
Issuer

Certificate is self-signed.

validity period
Not valid before
2016-12-26
Not valid after
2019-12-26
Fingerprints
SHA256
58:C9:12:D8:47:01:B7:44:79:1A:66:82:18:1B:14:A5:0E:14:CA:DA:EB:75:34:17:79:51:14:B0:24:E6:03:54
SHA1
A4:3A:A4:F4:24:B0:A2:59:F4:84:40:0B:BB:64:CB:DA:1D:52:66:2F
X509v3 extensions
subjectKeyIdentifier
  • 33:A1:1B:D9:1B:26:07:6A:DE:96:B3:B5:27:2F:3E:DF:AC:CB:BB:01
authorityKeyIdentifier
  • keyid:33:A1:1B:D9:1B:26:07:6A:DE:96:B3:B5:27:2F:3E:DF:AC:CB:BB:01