SSL-Tools

SSL check results of it-kaufmann.net

NEW You can also bulk check multiple servers.

Discover if the mail servers for it-kaufmann.net 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 Thu, 09 Nov 2023 13:27:19 +0000

We can not guarantee a secure connection to the mailservers of it-kaufmann.net!

Please contact the operator of it-kaufmann.net and ask him or her to solve this problem. This result stays accessible under the following address:

/mailservers/it-kaufmann.net

Servers

Incoming Mails

These servers are responsible for incoming mails to @it-kaufmann.net addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail2.uerre.org
46.4.183.117
 10
supported
mail3.uerre.org
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
1 s
mail.uerre.org
195.46.47.35
Results incomplete
20
unsupported
not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
11 s

Outgoing Mails

We have not received any emails from a @it-kaufmann.net address so far. Test mail delivery

Certificates

First seen at:

emailAddress=steffen.berg@it-kaufmann.net,CN=mail3.uerre.org,OU=EDP,O=stevoberg KLINGENCOILS,L=SG,ST=NRW,C=DE

Certificate chain
  • mail3.uerre.org (Certificate is self-signed.)
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch
    • Expired
    • Unknown Authority
Subject
Country (C)
  • DE
State (ST)
  • NRW
Locality (L)
  • SG
Organization (O)
  • stevoberg KLINGENCOILS
Organizational Unit (OU)
  • EDP
Common Name (CN)
  • mail3.uerre.org
Email
  • steffen.berg@it-kaufmann.net
Issuer

Certificate is self-signed.

validity period
Not valid before
2018-06-21
Not valid after
2021-03-17
Fingerprints
SHA256
56:DF:94:0B:FE:9D:33:B0:AA:85:C2:01:B8:79:9F:E1:BE:1A:1C:F3:F6:00:89:92:24:B6:00:0B:31:57:92:10
SHA1
DB:B8:45:BD:26:62:5A:90:20:F9:E4:3C:9A:E6:D0:4A:4E:3B:36:4C
X509v3 extensions
subjectKeyIdentifier
  • 2E:1D:40:2A:B6:6A:E8:6C:C1:BB:A3:91:F4:3E:F1:69:95:41:65:38
authorityKeyIdentifier
  • keyid:2E:1D:40:2A:B6:6A:E8:6C:C1:BB:A3:91:F4:3E:F1:69:95:41:65:38