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SSL check results of silcherschule-stuttgart.de

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Discover if the mail servers for silcherschule-stuttgart.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 Tue, 24 Sep 2024 12:27:09 +0000

The mailservers of silcherschule-stuttgart.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @silcherschule-stuttgart.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mx1.belwue.de
2001:7c0:0:76::2
 10
supported
mx1.belwue.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
1 s
mx1.belwue.de
2001:7c0:0:76::1
 10
supported
mx1.belwue.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
1 s
mx1.belwue.de
129.143.76.1
 10
supported
mx1.belwue.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
1 s
mx1.belwue.de
129.143.76.2
 10
supported
mx1.belwue.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
1 s

Outgoing Mails

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

Certificates

First seen at:

CN=mx1.belwue.de

Certificate chain
  • mx1.belwue.de
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R11
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mx1.belwue.de
Alternative Names
  • mail-in02.belwue.de
  • mx1.belwue.de
  • mx2.belwue.de
  • mx3.belwue.de
  • mx4.belwue.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R11
validity period
Not valid before
2024-08-12
Not valid after
2024-11-10
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
00:C1:C0:6F:47:5D:16:CF:C1:3D:B8:9C:8A:25:EB:FB:55:DA:79:28:2C:3A:C5:4D:8C:5A:8C:6F:51:75:93:AD
SHA1
D9:0E:0E:DC:34:6B:88:A0:1E:B3:77:31:56:9A:B1:99:0F:CB:6A:0B
X509v3 extensions
subjectKeyIdentifier
  • 1B:02:07:DF:F3:F0:B5:BD:DD:85:87:D1:FE:0D:13:FA:12:84:F4:C5
authorityKeyIdentifier
  • keyid:C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
authorityInfoAccess
  • OCSP - URI:http://r11.o.lencr.org
  • CA Issuers - URI:http://r11.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
ct_precert_scts
  • 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 : Aug 12 03:33:42.142 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:5B:09:93:19:83:3E:BD:7D:7C:8A:70:24:
  • 4D:44:C1:41:81:6C:1B:74:14:C6:C3:77:22:E5:7D:47:
  • EF:D3:C3:BB:02:20:6E:60:21:83:76:2F:E9:4E:C1:B9:
  • A6:DC:02:D1:27:67:44:9D:5D:49:DC:8D:30:B1:62:76:
  • 71:FE:D6:F4:FA:EC
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : EE:CD:D0:64:D5:DB:1A:CE:C5:5C:B7:9D:B4:CD:13:A2:
  • 32:87:46:7C:BC:EC:DE:C3:51:48:59:46:71:1F:B5:9B
  • Timestamp : Aug 12 03:33:42.147 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:A4:CF:F7:F5:C3:FB:CB:AC:46:C2:87:
  • 0A:A1:06:52:1B:7D:83:EC:8E:2B:26:C5:1D:03:23:B8:
  • 67:6C:BD:FD:0D:02:21:00:DA:76:41:B2:09:F1:BA:23:
  • F1:98:5E:0E:99:90:E6:2A:B0:7B:D4:F1:BA:D4:48:E2:
  • 04:5D:7A:AB:DC:B4:15:D5
First seen at:

CN=mx1.belwue.de

Certificate chain
  • mx1.belwue.de
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R10
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mx1.belwue.de
Alternative Names
  • mail-in01.belwue.de
  • mx1.belwue.de
  • mx2.belwue.de
  • mx3.belwue.de
  • mx4.belwue.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R10
validity period
Not valid before
2024-08-31
Not valid after
2024-11-29
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
4E:49:29:43:9E:58:57:FA:2F:0B:88:97:2A:8A:DB:43:63:4D:48:71:DC:89:76:E4:F9:E5:A4:EC:46:BC:57:8C
SHA1
CD:44:E4:BD:1E:62:04:FB:BA:A8:B1:2A:46:C0:75:34:29:58:54:90
X509v3 extensions
subjectKeyIdentifier
  • F6:F2:B5:0D:45:21:BE:F0:EE:83:2D:A2:E2:1B:54:CE:C6:29:00:E5
authorityKeyIdentifier
  • keyid:BB:BC:C3:47:A5:E4:BC:A9:C6:C3:A4:72:0C:10:8D:A2:35:E1:C8:E8
authorityInfoAccess
  • OCSP - URI:http://r10.o.lencr.org
  • CA Issuers - URI:http://r10.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : DF:E1:56:EB:AA:05:AF:B5:9C:0F:86:71:8D:A8:C0:32:
  • 4E:AE:56:D9:6E:A7:F5:A5:6A:01:D1:C1:3B:BE:52:5C
  • Timestamp : Aug 31 03:56:19.966 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:B5:1D:4D:51:CE:06:8B:FB:B4:11:53:
  • 86:E1:11:BD:92:23:B9:FD:72:21:5C:60:FB:78:77:C7:
  • 4A:79:BF:FE:02:02:21:00:9C:64:91:DC:28:C6:25:DA:
  • C9:9C:8A:E6:A7:12:38:22:CE:BA:B8:0B:1B:9E:15:EB:
  • 98:D3:DF:C5:46:4D:D8:1B
  • 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 : Aug 31 03:56:21.193 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:8C:EB:2C:39:8B:AF:48:2A:C4:E6:47:
  • 1C:0A:08:25:E6:81:27:14:85:C5:2D:CF:5E:FF:A9:C8:
  • 93:AB:EF:20:DE:02:21:00:E2:13:C4:C4:C0:17:7E:1C:
  • 52:CB:E1:56:27:38:8D:09:CB:6D:04:F7:4F:71:40:B5:
  • 99:6E:3C:33:59:83:6D:1A