SSL-Tools

SSL check results of coumans-hoyer.de

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Discover if the mail servers for coumans-hoyer.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

JSON Refresh

Report created Sun, 22 Jun 2025 00:30:43 +0000

We can not guarantee a secure connection to the mailservers of coumans-hoyer.de!

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

/mailservers/coumans-hoyer.de

Servers

Incoming Mails

These servers are responsible for incoming mails to @coumans-hoyer.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
uplink1.coumans-hoyer.de
178.15.110.152
 10
supported
ASGVD
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
12 s
uplink2.coumans-hoyer.de
212.16.250.109
Results incomplete
20 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
11 s
mxlb.ispgateway.de
80.67.18.126
Results incomplete
100
supported
not checked
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s

Outgoing Mails

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

Certificates

First seen at:

CN=ASGVD,O=TW Datentechnik GmbH,L=Aldenhoven,C=de

Certificate chain
  • ASGVD
    • remaining
    • 2048 bit
    • sha1WithRSAEncryption
    • Hostname Mismatch
    • Unknown Authority
      TW Datentechnik GmbH WebAdmin CA
Subject
Country (C)
  • de
Locality (L)
  • Aldenhoven
Organization (O)
  • TW Datentechnik GmbH
Common Name (CN)
  • ASGVD
Alternative Names
  • ASGVD
Issuer
Country (C)
  • de
Locality (L)
  • Aldenhoven
Organization (O)
  • TW Datentechnik GmbH
Common Name (CN)
  • TW Datentechnik GmbH WebAdmin CA
Email
  • asgvd@twdt-service.de
validity period
Not valid before
2013-09-21
Not valid after
2038-01-01
This certifcate has been verified for the following usages:
  • Digital Signature
  • Non Repudiation
  • Key Encipherment
Fingerprints
SHA256
FB:AD:BC:F1:D7:46:C4:D2:50:84:D2:6D:A0:65:B0:26:87:CA:AD:08:13:44:DB:64:31:9C:97:49:3E:3A:0A:5B
SHA1
44:7C:AF:01:71:BD:23:C7:CD:EF:34:47:D8:69:3E:98:04:15:B4:F9
X509v3 extensions
subjectKeyIdentifier
  • 89:50:B0:87:D2:3E:61:D5:28:A0:99:2D:72:E9:53:1F:A2:BA:6D:3A
authorityKeyIdentifier
  • keyid:77:5C:82:29:8B:15:98:36:E3:41:D1:7C:93:26:80:76:DE:C4:D1:60
  • DirName:/C=de/L=Aldenhoven/O=TW Datentechnik GmbH/CN=TW Datentechnik GmbH WebAdmin CA/emailAddress=asgvd@twdt-service.de
  • serial:CC:E3:3C:5A:B2:CF:7A:70