SSL-Tools

SSL check results of gruenbeck.at

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Discover if the mail servers for gruenbeck.at 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 Wed, 13 Aug 2025 16:42:20 +0000

We can not guarantee a secure connection to the mailservers of gruenbeck.at!

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

/mailservers/gruenbeck.at

Servers

Incoming Mails

These servers are responsible for incoming mails to @gruenbeck.at addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail2.gruenbeck.at
188.21.115.21
Results incomplete
10 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s
mail.gruenbeck.at
188.21.115.20
 50
supported
mail.gruenbeck.at
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s
mx3.bon.at
213.33.87.8
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 @gruenbeck.at address so far. Test mail delivery

Certificates

First seen at:

CN=mail.gruenbeck.at,OU=IT,O=Grünbeck Prozeßtechnik,L=Wien,ST=Wien,C=AT

Certificate chain
  • mail.gruenbeck.at
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Unknown Authority
      CA-GRUENBECK-AT
Subject
Country (C)
  • AT
State (ST)
  • Wien
Locality (L)
  • Wien
Organization (O)
  • Grünbeck Prozeßtechnik
Organizational Unit (OU)
  • IT
Common Name (CN)
  • mail.gruenbeck.at
Alternative Names
  • mail.gruenbeck.at
  • gbexchange.gruenbeck.local
  • AutoDiscover.gruenbeck.local
  • AutoDiscover.gruenbeck.at
  • GBExchange
Issuer
Domain Component (DC)
  • local
  • gruenbeck
Common Name (CN)
  • CA-GRUENBECK-AT
validity period
Not valid before
2025-03-28
Not valid after
2026-03-28
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
E5:A2:8A:89:07:19:D3:E9:12:52:37:59:0F:76:CA:79:87:B3:18:46:EB:12:72:93:F1:17:02:53:E4:43:81:EC
SHA1
2F:0B:C8:E1:A0:EE:FC:B2:55:7D:D9:79:C2:44:2C:ED:D3:F7:51:D8
X509v3 extensions
subjectKeyIdentifier
  • BA:48:E2:1F:50:39:C9:8F:31:03:6D:8D:8A:E3:0A:BF:8A:24:02:EE
authorityKeyIdentifier
  • keyid:C5:83:61:17:23:3C:F3:36:92:58:52:DF:D0:AD:87:D2:56:CB:1D:65
crlDistributionPoints
  • Full Name:
  • URI:ldap:///CN=CA-GRUENBECK-AT(3),CN=GBExchange,CN=CDP,CN=Public%20Key%20Services,CN=Services,CN=Configuration,DC=gruenbeck,DC=local?certificateRevocationList?base?objectClass=cRLDistributionPoint
authorityInfoAccess
  • CA Issuers - URI:ldap:///CN=CA-GRUENBECK-AT,CN=AIA,CN=Public%20Key%20Services,CN=Services,CN=Configuration,DC=gruenbeck,DC=local?cACertificate?base?objectClass=certificationAuthority
1_3_6_1_4_1_311_21_7
  • 0/.'+.....7.........V.......M...k.>..........d...
1_3_6_1_4_1_311_21_10
  • 0.0
  • ..+.......
SMIME-CAPS
  • 050...*.H.. ......0...*.H.. ......0...+....0
  • ..*.H.. ..