SSL-Tools

SSL check results of sanderbox.de

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Discover if the mail servers for sanderbox.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

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Report created Sat, 12 Sep 2026 05:50:46 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.sanderbox.de
2a03:4000:36:a5:3482:74ff:fec1:436
Results incomplete
10
supported
not checked
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
5 s
mail.sanderbox.de
213.109.161.247
Results incomplete
10
supported
not checked
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
4 s
mail2.sanderbox.de
2a03:4000:6:febc:837:d1ff:fe16:cb8d
 20
supported
mail2.sanderbox.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
1 s
mail2.sanderbox.de
188.68.56.11
 20
supported
mail2.sanderbox.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 @sanderbox.de address so far. Test mail delivery

Certificates

First seen at:

CN=mail2.sanderbox.de

Certificate chain
  • mail2.sanderbox.de
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • YE1
        • remaining
        • 384 bit
        • ecdsa-with-SHA384
          • Root YE
            • remaining
            • 384 bit
            • ecdsa-with-SHA384
              • ISRG Root X2 (Certificate is self-signed.)
                • remaining
                • 384 bit
                • ecdsa-with-SHA384
Subject
Common Name (CN)
  • mail2.sanderbox.de
Alternative Names
  • mail2.sanderbox.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • YE1
validity period
Not valid before
2026-09-08
Not valid after
2026-12-07
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
Fingerprints
SHA256
CD:49:C8:FA:2B:16:39:4F:A3:96:94:D1:4B:EE:F9:F9:D6:87:98:D5:69:D2:94:35:68:7D:A6:BE:CB:1A:C5:A3
SHA1
ED:BD:12:C9:BA:F8:93:7F:7A:92:3A:43:C9:D5:90:9A:EA:1B:E2:B8
X509v3 extensions
subjectKeyIdentifier
  • F3:DB:42:6E:15:E8:AA:3A:0A:46:C2:1B:F4:04:77:D3:9B:1D:A2:CA
authorityKeyIdentifier
  • keyid:BB:20:CA:47:0B:FE:D7:E5:9C:F9:8F:09:2A:A3:8C:37:45:B1:BC:D8
authorityInfoAccess
  • CA Issuers - URI:http://ye1.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://ye1.c.lencr.org/50.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65:
  • 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8
  • Timestamp : Sep 8 13:26:23.826 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:90:DB:23:B5:76:72:0B:F9:01:FD:5D:
  • 94:A0:62:B5:2F:98:9B:B5:8E:CC:FC:8E:EC:63:D2:D2:
  • BC:29:60:A8:BF:02:21:00:9B:2F:93:76:46:1A:D2:44:
  • 26:50:79:BD:87:1A:6D:56:66:FB:AD:D6:3A:16:7C:C4:
  • 36:3A:DD:AE:1F:AC:9C:A1
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 46:AF:86:3D:3B:3E:E5:9F:A5:77:DE:A8:24:5D:36:B0:
  • D9:ED:22:A2:23:F4:61:77:41:22:94:52:EE:95:50:5F
  • Timestamp : Sep 8 13:26:23.952 2026 GMT
  • Extensions: 00:00:05:00:28:43:14:10
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:BF:5A:E8:6D:AA:24:C7:64:A9:B4:5B:
  • B5:6F:7E:BD:91:F6:7D:26:5F:B8:1C:EA:65:25:0C:AC:
  • FD:76:75:6E:15:02:21:00:AC:18:53:52:61:85:CD:EE:
  • 77:12:88:75:79:8E:2B:08:3A:7B:EE:E5:5A:E2:78:43:
  • 6A:FE:BD:A1:3D:B2:01:C3