SSL-Tools

SSL check results of kvnbw.de

NEW You can also bulk check multiple servers.

Discover if the mail servers for kvnbw.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 Fri, 14 Nov 2025 12:32:17 +0000

The mailservers of kvnbw.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @kvnbw.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mx8.kvnbw.de
194.59.36.34
 10
supported
mx8.kvnbw.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s
mx9.kvnbw.de
194.59.36.35
 10
supported
mx9.kvnbw.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s
mx6.kvnbw.de
194.0.94.48
 10
supported
mx6.kvnbw.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s
mx7.kvnbw.de
194.0.94.49
 10
supported
mx7.kvnbw.de
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 @kvnbw.de address so far. Test mail delivery

Certificates

First seen at:

CN=mx8.kvnbw.de,O=Komm.ONE Anstalt des oeffentlichen Rechts,L=Stuttgart,ST=Baden-Wuerttemberg,C=DE

Certificate chain
Subject
Country (C)
  • DE
State (ST)
  • Baden-Wuerttemberg
Locality (L)
  • Stuttgart
Organization (O)
  • Komm.ONE Anstalt des oeffentlichen Rechts
Common Name (CN)
  • mx8.kvnbw.de
Alternative Names
  • mx8.kvnbw.de
Issuer
Country (C)
  • BE
Organization (O)
  • GlobalSign nv-sa
Common Name (CN)
  • GlobalSign RSA OV SSL CA 2018
validity period
Not valid before
2025-05-06
Not valid after
2026-06-07
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
D1:93:F9:9B:14:48:03:A5:6D:95:49:52:7E:06:E1:E8:E9:E6:33:74:98:08:56:A9:C0:C2:5F:C9:AE:29:F1:14
SHA1
4F:1A:13:4F:EB:EF:1A:D2:67:D7:AB:C9:FB:B2:92:B4:AB:A6:8C:55
X509v3 extensions
authorityInfoAccess
  • CA Issuers - URI:http://secure.globalsign.com/cacert/gsrsaovsslca2018.crt
  • OCSP - URI:http://ocsp.globalsign.com/gsrsaovsslca2018
certificatePolicies
  • Policy: 1.3.6.1.4.1.4146.1.20
  • CPS: https://www.globalsign.com/repository/
  • Policy: 2.23.140.1.2.2
crlDistributionPoints
  • Full Name:
  • URI:http://crl.globalsign.com/gsrsaovsslca2018.crl
authorityKeyIdentifier
  • keyid:F8:EF:7F:F2:CD:78:67:A8:DE:6F:8F:24:8D:88:F1:87:03:02:B3:EB
subjectKeyIdentifier
  • F0:66:E7:D2:2F:33:33:E1:4F:2E:2A:F2:B7:66:32:8A:2C:E6:D1:3E
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 19:86:D4:C7:28:AA:6F:FE:BA:03:6F:78:2A:4D:01:91:
  • AA:CE:2D:72:31:0F:AE:CE:5D:70:41:2D:25:4C:C7:D4
  • Timestamp : May 6 08:46:09.086 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:0F:10:C1:9A:57:86:E0:DE:7A:29:96:8A:
  • 68:54:EA:95:6B:3D:C0:3C:B5:D1:F9:AF:D5:D8:65:1C:
  • FC:C5:2B:67:02:20:14:7B:00:38:19:DA:6E:7C:94:B0:
  • 0B:55:58:62:45:D1:89:94:22:90:45:B1:18:B9:AD:8E:
  • 74:85:7A:34:57:2B
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E:
  • F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7
  • Timestamp : May 6 08:46:09.109 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:39:E0:F9:8E:F5:B1:D2:93:2A:26:25:18:
  • E2:9E:CC:39:D2:36:4C:F5:FC:55:48:10:1A:C6:76:4F:
  • 8F:17:49:B7:02:21:00:81:62:A5:0C:6E:36:D5:A0:AD:
  • E2:30:D6:E8:F7:A3:C6:E1:0B:2F:05:13:69:F1:B5:F3:
  • FE:37:C8:0C:83:7D:5A
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 49:9C:9B:69:DE:1D:7C:EC:FC:36:DE:CD:87:64:A6:B8:
  • 5B:AF:0A:87:80:19:D1:55:52:FB:E9:EB:29:DD:F8:C3
  • Timestamp : May 6 08:46:09.088 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:72:EA:A0:A6:AF:F9:00:0B:43:91:D4:76:
  • DF:23:38:D6:31:34:4C:C4:84:04:CF:CC:57:41:5A:D7:
  • 09:CD:6B:61:02:21:00:A1:80:20:D7:AC:C8:F7:89:CC:
  • 0F:01:3C:62:BB:5B:4C:E7:36:DA:26:A5:AB:3B:1C:AC:
  • D6:57:76:4A:E0:45:D4
First seen at:

CN=mx9.kvnbw.de,O=Komm.ONE Anstalt des oeffentlichen Rechts,L=Stuttgart,ST=Baden-Wuerttemberg,C=DE

Certificate chain
Subject
Country (C)
  • DE
State (ST)
  • Baden-Wuerttemberg
Locality (L)
  • Stuttgart
Organization (O)
  • Komm.ONE Anstalt des oeffentlichen Rechts
Common Name (CN)
  • mx9.kvnbw.de
Alternative Names
  • mx9.kvnbw.de
Issuer
Country (C)
  • BE
Organization (O)
  • GlobalSign nv-sa
Common Name (CN)
  • GlobalSign RSA OV SSL CA 2018
validity period
Not valid before
2025-05-06
Not valid after
2026-06-07
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
AE:3F:97:7D:77:9F:58:50:6C:D4:7E:E4:27:02:51:D6:E1:C6:EF:3E:39:E5:2F:2E:F5:5B:0C:BA:37:7D:65:72
SHA1
8B:0F:2B:E4:42:87:27:8E:52:19:F1:AE:E1:AB:7E:EC:92:55:29:B8
X509v3 extensions
authorityInfoAccess
  • CA Issuers - URI:http://secure.globalsign.com/cacert/gsrsaovsslca2018.crt
  • OCSP - URI:http://ocsp.globalsign.com/gsrsaovsslca2018
certificatePolicies
  • Policy: 1.3.6.1.4.1.4146.1.20
  • CPS: https://www.globalsign.com/repository/
  • Policy: 2.23.140.1.2.2
crlDistributionPoints
  • Full Name:
  • URI:http://crl.globalsign.com/gsrsaovsslca2018.crl
authorityKeyIdentifier
  • keyid:F8:EF:7F:F2:CD:78:67:A8:DE:6F:8F:24:8D:88:F1:87:03:02:B3:EB
subjectKeyIdentifier
  • 19:01:82:42:BF:95:0A:EB:FF:17:A9:53:2A:75:AB:70:09:E8:B1:3E
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 19:86:D4:C7:28:AA:6F:FE:BA:03:6F:78:2A:4D:01:91:
  • AA:CE:2D:72:31:0F:AE:CE:5D:70:41:2D:25:4C:C7:D4
  • Timestamp : May 6 08:47:04.157 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:EF:E1:D0:C6:83:BD:8E:53:00:5F:7A:
  • 68:60:89:27:99:FA:9D:BA:25:F1:7E:58:B1:D9:2A:2B:
  • EC:CA:00:8F:69:02:21:00:D1:CD:51:5B:F3:34:0E:48:
  • 43:D1:34:E3:ED:56:4D:55:3E:A1:87:3B:FB:8E:C5:82:
  • C3:48:F2:13:82:7B:7D:02
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E:
  • F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7
  • Timestamp : May 6 08:47:04.181 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:F1:A4:8D:C1:A3:BC:EC:FC:74:40:CF:
  • 22:67:8E:D7:52:A0:35:EC:50:B1:FA:F5:04:94:C4:3C:
  • 15:6A:22:CD:FB:02:21:00:9D:43:1E:25:09:A5:E7:B0:
  • 7D:FF:BC:E8:9E:F0:1B:E2:A6:E0:45:C4:E8:D9:6F:C5:
  • 83:61:27:82:75:81:7D:67
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 49:9C:9B:69:DE:1D:7C:EC:FC:36:DE:CD:87:64:A6:B8:
  • 5B:AF:0A:87:80:19:D1:55:52:FB:E9:EB:29:DD:F8:C3
  • Timestamp : May 6 08:47:04.157 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:A8:6A:64:70:4B:24:05:BA:6B:48:50:
  • B4:42:E5:90:61:D7:AE:B9:69:21:2E:98:D7:09:53:3A:
  • 35:18:B9:27:33:02:20:43:FD:2D:31:AE:0B:D7:82:37:
  • 33:58:16:E8:55:5D:A5:7C:98:48:D5:65:3B:B7:E9:CD:
  • F5:28:19:DA:60:8A:06
First seen at:

CN=mx6.kvnbw.de,O=Komm.ONE Anstalt des oeffentlichen Rechts,L=Stuttgart,ST=Baden-Wuerttemberg,C=DE

Certificate chain
Subject
Country (C)
  • DE
State (ST)
  • Baden-Wuerttemberg
Locality (L)
  • Stuttgart
Organization (O)
  • Komm.ONE Anstalt des oeffentlichen Rechts
Common Name (CN)
  • mx6.kvnbw.de
Alternative Names
  • mx6.kvnbw.de
Issuer
Country (C)
  • BE
Organization (O)
  • GlobalSign nv-sa
Common Name (CN)
  • GlobalSign RSA OV SSL CA 2018
validity period
Not valid before
2025-05-06
Not valid after
2026-06-07
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
BD:10:21:6C:43:04:F6:6A:F7:2D:1B:72:06:5D:01:08:1B:7B:29:5A:CD:9E:BF:B7:DD:23:74:3D:4A:46:B8:85
SHA1
81:89:73:17:BA:FF:20:54:6B:BB:94:36:48:30:83:7D:97:C1:6C:2B
X509v3 extensions
authorityInfoAccess
  • CA Issuers - URI:http://secure.globalsign.com/cacert/gsrsaovsslca2018.crt
  • OCSP - URI:http://ocsp.globalsign.com/gsrsaovsslca2018
certificatePolicies
  • Policy: 1.3.6.1.4.1.4146.1.20
  • CPS: https://www.globalsign.com/repository/
  • Policy: 2.23.140.1.2.2
crlDistributionPoints
  • Full Name:
  • URI:http://crl.globalsign.com/gsrsaovsslca2018.crl
authorityKeyIdentifier
  • keyid:F8:EF:7F:F2:CD:78:67:A8:DE:6F:8F:24:8D:88:F1:87:03:02:B3:EB
subjectKeyIdentifier
  • 86:21:98:20:2B:B5:BF:9B:DE:B2:9F:0E:9C:02:FF:CA:AE:81:E5:48
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 19:86:D4:C7:28:AA:6F:FE:BA:03:6F:78:2A:4D:01:91:
  • AA:CE:2D:72:31:0F:AE:CE:5D:70:41:2D:25:4C:C7:D4
  • Timestamp : May 6 08:47:34.645 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:FA:9E:41:5A:E8:FF:C1:7F:04:7B:75:
  • 5D:60:EB:76:18:4F:D1:84:31:50:B5:53:A4:31:36:48:
  • 3E:D3:1F:B4:63:02:21:00:85:AE:87:B4:9F:85:92:96:
  • BA:15:2F:9A:C0:FF:58:83:F1:08:69:66:FD:EE:79:21:
  • F6:79:E1:3A:56:6B:8C:18
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E:
  • F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7
  • Timestamp : May 6 08:47:34.670 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:4B:72:23:50:DB:D1:95:1A:CC:86:DD:CC:
  • 4F:89:5F:33:BA:4E:28:26:1B:DD:04:6F:9F:46:F3:EA:
  • DB:4C:05:E7:02:20:3C:4A:DB:8F:2E:36:4A:47:E8:84:
  • 7C:D7:C4:96:93:A5:8A:6A:05:E2:43:8B:FD:7C:C5:32:
  • 87:4B:67:A9:67:1C
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 49:9C:9B:69:DE:1D:7C:EC:FC:36:DE:CD:87:64:A6:B8:
  • 5B:AF:0A:87:80:19:D1:55:52:FB:E9:EB:29:DD:F8:C3
  • Timestamp : May 6 08:47:34.639 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:69:D6:83:56:B8:09:32:D4:C5:BA:D2:DB:
  • B2:29:F7:44:F1:90:09:5A:DA:4D:4A:6A:8D:C4:B3:30:
  • 1C:CF:D6:1D:02:21:00:9F:0C:02:63:E8:FE:B7:7E:A7:
  • 45:2A:71:62:9C:6F:58:E1:36:17:D8:60:C9:43:32:4B:
  • 0E:CF:C7:13:33:06:06
First seen at:

CN=mx7.kvnbw.de,O=Komm.ONE Anstalt des oeffentlichen Rechts,L=Stuttgart,ST=Baden-Wuerttemberg,C=DE

Certificate chain
Subject
Country (C)
  • DE
State (ST)
  • Baden-Wuerttemberg
Locality (L)
  • Stuttgart
Organization (O)
  • Komm.ONE Anstalt des oeffentlichen Rechts
Common Name (CN)
  • mx7.kvnbw.de
Alternative Names
  • mx7.kvnbw.de
Issuer
Country (C)
  • BE
Organization (O)
  • GlobalSign nv-sa
Common Name (CN)
  • GlobalSign RSA OV SSL CA 2018
validity period
Not valid before
2025-05-02
Not valid after
2026-06-03
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
1A:8D:BB:F9:BD:3A:4A:FC:06:A1:4A:23:77:E4:6D:B9:A6:A0:A4:7F:78:F9:F5:7A:25:64:45:12:CB:E0:AE:D8
SHA1
99:C4:A4:E3:AE:17:D5:8C:1A:33:D9:BD:C4:DA:30:1D:1E:65:E0:F1
X509v3 extensions
authorityInfoAccess
  • CA Issuers - URI:http://secure.globalsign.com/cacert/gsrsaovsslca2018.crt
  • OCSP - URI:http://ocsp.globalsign.com/gsrsaovsslca2018
certificatePolicies
  • Policy: 1.3.6.1.4.1.4146.1.20
  • CPS: https://www.globalsign.com/repository/
  • Policy: 2.23.140.1.2.2
crlDistributionPoints
  • Full Name:
  • URI:http://crl.globalsign.com/gsrsaovsslca2018.crl
authorityKeyIdentifier
  • keyid:F8:EF:7F:F2:CD:78:67:A8:DE:6F:8F:24:8D:88:F1:87:03:02:B3:EB
subjectKeyIdentifier
  • 17:0C:CF:44:B6:5B:85:F5:7B:3F:EF:3B:A7:C5:9B:87:DA:92:F5:84
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 19:86:D4:C7:28:AA:6F:FE:BA:03:6F:78:2A:4D:01:91:
  • AA:CE:2D:72:31:0F:AE:CE:5D:70:41:2D:25:4C:C7:D4
  • Timestamp : May 2 12:33:56.064 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:FF:C6:35:92:A7:FB:7A:82:1E:96:B4:
  • 8F:F8:5F:36:5B:F4:65:5B:BC:3F:8A:B9:81:55:1E:9C:
  • 04:48:55:8B:7F:02:20:2A:86:38:43:37:3E:D4:5E:81:
  • 78:B9:91:58:36:86:12:8B:60:F1:89:DD:44:2F:63:9E:
  • 32:99:02:66:F9:CA:E9
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 64:11:C4:6C:A4:12:EC:A7:89:1C:A2:02:2E:00:BC:AB:
  • 4F:28:07:D4:1E:35:27:AB:EA:FE:D5:03:C9:7D:CD:F0
  • Timestamp : May 2 12:33:56.019 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:AC:31:85:38:07:7C:71:5C:B7:F8:8A:
  • 99:0E:74:AB:3A:DC:F8:0B:06:9F:DE:F1:44:FB:CD:A6:
  • D4:95:B9:0D:B4:02:21:00:E0:5D:81:F4:A3:8D:3C:00:
  • A7:16:CF:2D:11:0D:AD:B7:B6:38:A6:C0:71:28:0B:61:
  • 65:0B:40:C3:48:F7:4C:88
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E:
  • F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7
  • Timestamp : May 2 12:33:55.644 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:A6:BC:B9:7B:A9:80:FD:A0:E1:C6:94:
  • A4:3C:8D:1C:A5:5C:21:5C:DD:11:42:7D:CC:72:E8:49:
  • FA:33:F3:9F:FD:02:21:00:D0:82:79:C0:FD:83:55:23:
  • 6E:45:13:56:EA:41:13:CC:2F:66:B4:D1:15:77:BF:9C:
  • F5:EA:5C:13:D3:32:50:F8