SSL-Tools

SSL check results of ds-shanghai.info

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Discover if the mail servers for ds-shanghai.info 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, 10 Dec 2025 19:55:59 +0000

No connection to the mailservers of ds-shanghai.info could be established.

Servers

Incoming Mails

These servers are responsible for incoming mails to @ds-shanghai.info addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.ds-shanghai.info
158.255.208.123
Results incomplete
10
supported
ds-shanghai.info
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
9 s

Outgoing Mails

We have received emails from these servers with @ds-shanghai.info sender addresses. Test mail delivery

Host TLS Version & Cipher
mail.ds-shanghai.info (158.255.208.123)
TLSv1.2 AECDH-AES256-SHA

Certificates

First seen at:

CN=ds-shanghai.info

Certificate chain
  • ds-shanghai.info
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R13
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • ds-shanghai.info
Alternative Names
  • abi-fos-rs-2022.ds-shanghai.info
  • abi-fos-rs-2023.ds-shanghai.info
  • abi-fos-rs-2024.ds-shanghai.info
  • abi-fos-rs-2025.ds-shanghai.info
  • api-untis-yp.ds-shanghai.info
  • bewerbung.ds-shanghai.info
  • ds-sh.info
  • ds-sh.net
  • ds-shanghai.info
  • dss-hq.de
  • dss-yp.de
  • lightmeter.ds-shanghai.info
  • mail.ds-shanghai.info
  • meet.ds-shanghai.info
  • mitgliederversammlung.ds-shanghai.info
  • mv-abstimmung.ds-shanghai.info
  • n8n.ds-shanghai.info
  • survey.ds-shanghai.info
  • umfrage.ds-shanghai.info
  • www.abi-fos-rs-2022.ds-shanghai.info
  • www.abi-fos-rs-2023.ds-shanghai.info
  • www.abi-fos-rs-2024.ds-shanghai.info
  • www.abi-fos-rs-2025.ds-shanghai.info
  • www.bewerbung.ds-shanghai.info
  • www.ds-sh.net
  • www.ds-shanghai.info
  • www.dss-hq.de
  • www.dss-yp.de
  • www.mail.ds-shanghai.info
  • www.meet.ds-shanghai.info
  • www.mitgliederversammlung.ds-shanghai.info
  • www.mv-abstimmung.ds-shanghai.info
  • www.survey.ds-shanghai.info
  • www.umfrage.ds-shanghai.info
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R13
validity period
Not valid before
2025-11-20
Not valid after
2026-02-18
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
C8:FC:8F:38:F4:92:DF:73:97:D2:2A:F4:3E:BB:13:B1:49:CA:A1:B8:D6:40:9C:09:0C:C3:11:5B:6C:15:77:AC
SHA1
64:BE:24:1D:2C:8B:C6:5C:AF:09:5B:EB:7A:95:A6:74:8B:54:CC:E2
X509v3 extensions
subjectKeyIdentifier
  • 0C:D5:16:7D:2B:8A:73:22:51:CD:C0:00:CD:95:98:3B:A1:08:A9:DD
authorityKeyIdentifier
  • keyid:E7:AB:9F:0F:2C:33:A0:53:D3:5E:4F:78:C8:B2:84:0E:3B:D6:92:33
authorityInfoAccess
  • CA Issuers - URI:http://r13.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r13.c.lencr.org/44.crl
ct_precert_scts
  • 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 : Nov 20 09:25:29.790 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:BC:77:C4:B1:05:8C:AE:F4:0C:1E:F8:
  • 74:72:A8:56:2A:85:91:D5:16:67:D3:F2:99:F3:7F:3A:
  • 8C:47:3D:49:1A:02:20:6A:07:1E:68:48:2A:51:F6:B8:
  • B0:09:96:F1:50:92:0D:C9:80:99:8D:53:04:84:13:E2:
  • CB:72:1F:33:EA:39:18
  • 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 : Nov 20 09:25:31.803 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:BB:D1:49:68:E6:66:87:54:17:38:3D:
  • 21:B3:EA:EB:A1:F5:35:5C:29:63:6E:41:39:FF:7B:63:
  • CD:41:63:4D:74:02:20:26:3F:EB:E6:26:D2:0A:4E:E7:
  • A3:11:18:1E:DB:EF:47:E9:84:25:22:F9:E6:3F:44:2D:
  • 03:8B:C6:8E:9B:37:EB