SSL-Tools

SSL check results of mail.sysinf.de

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Discover if the mail servers for mail.sysinf.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, 15 Jul 2025 14:28:53 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.sysinf.de
79.212.227.90
 -
supported
mail.sysinf.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.sysinf.de

Certificate chain
  • mail.sysinf.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)
  • mail.sysinf.de
Alternative Names
  • mail.sysinf.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R10
validity period
Not valid before
2025-05-14
Not valid after
2025-08-12
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
02:DA:41:15:9E:AD:F1:A4:B0:27:39:19:68:40:89:65:D6:66:4D:80:27:B1:3A:1D:2C:C2:67:66:19:37:2B:9A
SHA1
3D:AC:6C:5B:E3:17:76:C0:E6:1E:2E:24:4C:93:02:FE:91:E7:56:AF
X509v3 extensions
subjectKeyIdentifier
  • A7:49:77:E9:E5:E2:16:27:8E:DA:E8:9E:F5:4C:A5:F9:8D:49:9F:18
authorityKeyIdentifier
  • keyid:BB:BC:C3:47:A5:E4:BC:A9:C6:C3:A4:72:0C:10:8D:A2:35:E1:C8:E8
authorityInfoAccess
  • CA Issuers - URI:http://r10.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r10.c.lencr.org/52.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : A4:42:C5:06:49:60:61:54:8F:0F:D4:EA:9C:FB:7A:2D:
  • 26:45:4D:87:A9:7F:2F:DF:45:59:F6:27:4F:3A:84:54
  • Timestamp : May 14 13:43:58.896 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:55:67:AA:62:D4:B4:74:F8:28:08:33:F9:
  • 25:16:00:3D:EE:AB:42:4C:6F:AB:A9:09:19:3D:1C:F5:
  • 75:B7:77:8A:02:20:1F:58:80:A6:A6:D9:09:00:9C:E7:
  • EF:08:00:08:E7:DD:A4:CB:D4:36:18:62:E2:1D:09:5F:
  • C9:15:F8:ED:A0:F7
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CC:FB:0F:6A:85:71:09:65:FE:95:9B:53:CE:E9:B2:7C:
  • 22:E9:85:5C:0D:97:8D:B6:A9:7E:54:C0:FE:4C:0D:B0
  • Timestamp : May 14 13:44:00.931 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:53:32:8E:57:70:88:2C:7F:81:2A:18:26:
  • 28:B6:0D:13:74:31:94:30:4A:35:18:7D:50:70:78:74:
  • 25:B2:B9:44:02:21:00:CA:EF:02:9E:A5:80:55:DD:E3:
  • A4:32:E7:E7:49:38:6E:A2:95:10:A3:38:9B:47:C8:31:
  • 14:50:F6:DE:AC:54:72