SSL-Tools

SSL check results of schumann-law.de

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Discover if the mail servers for schumann-law.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 Sun, 21 Jun 2020 23:51:07 +0000

The mailservers of schumann-law.de can be reached through an encrypted connection.

However, we found problems that may affect the security.

Servers

Incoming Mails

These servers are responsible for incoming mails to @schumann-law.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
smtp.schumann-law.de
90.187.67.145
 10
supported
smtp.schumann-law.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • ECDHE_RSA_WITH_RC4_128_SHA
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
12 s

Outgoing Mails

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

Certificates

First seen at:

CN=smtp.schumann-law.de

Certificate chain
Subject
Common Name (CN)
  • smtp.schumann-law.de
Alternative Names
  • smtp.schumann-law.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2019-08-10
Not valid after
2019-11-08
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
49:46:E2:D9:FE:A2:E7:00:8E:19:A6:D2:07:DD:29:27:23:D5:BF:54:69:D1:16:F4:97:68:A3:BB:F2:90:B0:20
SHA1
6B:0B:16:20:42:A6:8F:FA:87:15:05:2D:82:43:38:BF:37:C7:BA:45
X509v3 extensions
subjectKeyIdentifier
  • 83:D2:F7:12:A8:7E:64:36:B1:5B:2D:3B:23:D4:38:F6:B6:E7:A8:A6
authorityKeyIdentifier
  • keyid:A8:4A:6A:63:04:7D:DD:BA:E6:D1:39:B7:A6:45:65:EF:F3:A8:EC:A1
authorityInfoAccess
  • OCSP - URI:http://ocsp.int-x3.letsencrypt.org
  • CA Issuers - URI:http://cert.int-x3.letsencrypt.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • Policy: 1.3.6.1.4.1.44947.1.1.1
  • CPS: http://cps.letsencrypt.org
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 74:7E:DA:83:31:AD:33:10:91:21:9C:CE:25:4F:42:70:
  • C2:BF:FD:5E:42:20:08:C6:37:35:79:E6:10:7B:CC:56
  • Timestamp : Aug 10 08:44:44.165 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:89:AB:AB:A4:97:86:9D:95:F7:EA:F1:
  • 3E:4F:CC:D6:A3:2E:6F:F9:9D:44:38:3C:3F:FA:0D:B4:
  • C3:3E:75:B4:10:02:20:45:D4:01:64:EB:3E:14:B5:35:
  • 92:C5:61:74:23:F2:9F:2F:FA:2F:12:56:E3:C0:82:79:
  • BC:EF:38:74:A1:86:22
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 63:F2:DB:CD:E8:3B:CC:2C:CF:0B:72:84:27:57:6B:33:
  • A4:8D:61:77:8F:BD:75:A6:38:B1:C7:68:54:4B:D8:8D
  • Timestamp : Aug 10 08:44:44.150 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:BE:ED:A6:DE:CD:7D:B4:FE:E7:3E:A2:
  • D9:97:1B:1C:1D:CD:B7:9E:8A:46:EE:37:73:27:76:ED:
  • F9:CA:C0:26:5A:02:20:66:B2:19:44:9A:1C:20:2B:66:
  • 73:69:41:DD:4D:D4:22:34:9E:93:63:CA:25:95:28:81:
  • 88:A3:B4:34:14:CF:8D