SSL-Tools

SSL check results of kassel.de

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Discover if the mail servers for kassel.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 Wed, 22 Nov 2023 09:33:05 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail1.kassel.de
45.138.56.6
 10
supported
*.kassel.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
mail2.stadt-kassel.de
80.69.207.7
Results incomplete
20 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
11 s
mail4.stadt-kassel.de
80.69.207.11
Results incomplete
30 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 @kassel.de address so far. Test mail delivery

Certificates

First seen at:

CN=*.kassel.de,O=Stadt Kassel,L=Kassel,C=DE

Certificate chain
Subject
Country (C)
  • DE
Locality (L)
  • Kassel
Organization (O)
  • Stadt Kassel
Common Name (CN)
  • *.kassel.de
Alternative Names
  • *.kassel.de
  • kassel.de
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Organizational Unit (OU)
  • www.digicert.com
Common Name (CN)
  • GeoTrust TLS RSA CA G1
validity period
Not valid before
2023-11-15
Not valid after
2024-12-15
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
AD:6C:7F:CB:13:E6:FB:FE:4C:47:C5:0C:45:A7:8C:4A:F2:97:4A:5C:4C:4A:B5:D7:3D:DE:F3:C7:8C:09:40:E4
SHA1
9A:2A:FF:05:32:8D:86:4A:4D:07:08:6B:18:6A:C6:62:1B:DA:F7:9A
X509v3 extensions
authorityKeyIdentifier
  • keyid:94:4F:D4:5D:8B:E4:A4:E2:A6:80:FE:FD:D8:F9:00:EF:A3:BE:02:57
subjectKeyIdentifier
  • 76:16:ED:6F:58:2B:D3:30:53:F0:A7:FC:5C:1C:EA:D3:87:3E:63:56
certificatePolicies
  • Policy: 2.23.140.1.2.2
  • CPS: http://www.digicert.com/CPS
crlDistributionPoints
  • Full Name:
  • URI:http://cdp.geotrust.com/GeoTrustTLSRSACAG1.crl
authorityInfoAccess
  • OCSP - URI:http://status.geotrust.com
  • CA Issuers - URI:http://cacerts.geotrust.com/GeoTrustTLSRSACAG1.crt
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 76:FF:88:3F:0A:B6:FB:95:51:C2:61:CC:F5:87:BA:34:
  • B4:A4:CD:BB:29:DC:68:42:0A:9F:E6:67:4C:5A:3A:74
  • Timestamp : Nov 15 07:23:27.132 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:9E:DA:C8:01:A2:2D:1F:2B:3C:BA:59:
  • FC:79:72:3C:A1:60:01:6F:D3:A0:84:65:7E:93:DB:92:
  • 08:39:D2:94:CA:02:21:00:8B:6B:F6:33:D1:42:7C:DA:
  • 31:AF:53:EF:A8:09:E2:F8:4F:8B:92:BC:6A:13:FB:2E:
  • 7C:E9:F4:20:65:06:29:F7
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 48:B0:E3:6B:DA:A6:47:34:0F:E5:6A:02:FA:9D:30:EB:
  • 1C:52:01:CB:56:DD:2C:81:D9:BB:BF:AB:39:D8:84:73
  • Timestamp : Nov 15 07:23:27.080 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:45:13:90:0B:2E:6B:0E:0E:F6:FB:73:F2:
  • 40:1A:94:3A:75:37:44:B7:F1:A8:52:0C:C7:49:F6:7E:
  • 6E:B9:D7:E5:02:20:19:16:43:47:5F:8C:32:00:0A:FD:
  • D1:FE:B4:DD:73:68:46:82:FF:30:EA:A3:18:82:7B:80:
  • F0:59:C8:3B:71:84
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 3F:17:4B:4F:D7:22:47:58:94:1D:65:1C:84:BE:0D:12:
  • ED:90:37:7F:1F:85:6A:EB:C1:BF:28:85:EC:F8:64:6E
  • Timestamp : Nov 15 07:23:27.162 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:F8:10:19:0C:9B:76:F1:30:77:85:E2:
  • 58:36:20:15:67:FC:28:08:2B:15:E3:7C:8E:8A:12:0B:
  • 4E:88:48:DA:46:02:20:10:F7:FD:F0:4B:2E:23:E7:54:
  • 8C:30:ED:FA:0D:AA:F3:78:52:AF:1A:56:3B:00:B7:9F:
  • DE:CF:22:2C:C4:60:1D