SSL-Tools

SSL check results of gdmb.de

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Discover if the mail servers for gdmb.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

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Report created Mon, 13 Nov 2023 14:32:39 +0000

The mailservers of gdmb.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 @gdmb.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
intern.gdmb.de
62.246.84.182
 10
supported
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s

Outgoing Mails

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

Certificates

First seen at:

emailAddress=edv@gdmb.de,OU=Webhosting,O=GDMB,L=Clausthal-Zellerfeld,C=de

Certificate chain
  • Webhosting
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch
    • Unknown Authority
      GDMB VPN CA
Subject
Country (C)
  • de
Locality (L)
  • Clausthal-Zellerfeld
Organization (O)
  • GDMB
Organizational Unit (OU)
  • Webhosting
Email
  • edv@gdmb.de
Alternative Names
  • IP Address:192.168.100.254
Issuer
Country (C)
  • de
Locality (L)
  • Clausthal-Zellerfeld
Organization (O)
  • GDMB
Common Name (CN)
  • GDMB VPN CA
Email
  • gdmb@gdmb.de
validity period
Not valid before
2023-05-09
Not valid after
2038-01-01
This certifcate has been verified for the following usages:
  • Digital Signature
  • Non Repudiation
  • Key Encipherment
Fingerprints
SHA256
27:31:39:C0:CA:A4:3C:2E:3F:23:A1:C3:37:FE:68:02:23:EE:04:1A:70:9B:64:C2:FF:F4:C5:A7:A5:0E:14:D5
SHA1
A0:BE:BA:D5:DC:46:7A:8E:AF:91:82:5F:7B:2E:9A:9C:6A:DE:C8:47
X509v3 extensions
subjectKeyIdentifier
  • 13:17:F8:54:B4:DB:DA:E7:53:5A:88:80:BC:46:D3:E6:E5:40:9E:B2
authorityKeyIdentifier
  • keyid:EB:EB:8F:CB:15:EA:5C:D4:5E:57:07:23:E4:67:1C:E9:4B:D6:52:68
  • DirName:/C=de/L=Clausthal-Zellerfeld/O=GDMB/CN=GDMB VPN CA/emailAddress=gdmb@gdmb.de
  • serial:B7:2D:36:5A:8A:79:8F:23