SSL check results of kurs.software

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Discover if the mail servers for kurs.software 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

Report created Wed, 03 Jun 2020 00:31:00 +0000

The mailservers of kurs.software can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @kurs.software addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.kurs.software
2a01:4f8:241:1bed::2
1
supported
*.kurs.software
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
8 s
mail.kurs.software
116.202.214.146
1
supported
*.kurs.software
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
8 s

Outgoing Mails

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

Certificates

First seen at:

CN=*.kurs.software

Certificate chain
Subject
Common Name (CN)
  • *.kurs.software
Alternative Names
  • *.kurs.software
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2020-05-23
Not valid after
2020-08-21
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
3E:D2:46:64:BE:ED:07:E1:D8:1C:C3:A0:4F:E3:34:7F:B0:6F:A9:D8:0F:29:47:2F:62:EA:0A:0E:06:06:F2:29
SHA1
66:D3:DD:30:C8:99:AD:9B:32:D7:F3:DF:AF:4B:1F:4C:5D:84:BC:66
X509v3 extensions
subjectKeyIdentifier
  • 9D:55:10:BF:2B:BB:52:C8:DE:38:85:42:29:01:6F:03:20:2F:32:17
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 : 6F:53:76:AC:31:F0:31:19:D8:99:00:A4:51:15:FF:77:
  • 15:1C:11:D9:02:C1:00:29:06:8D:B2:08:9A:37:D9:13
  • Timestamp : May 23 19:48:17.123 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:55:A3:A6:BB:89:19:0A:9D:0F:F6:59:61:
  • 7E:92:47:F1:C0:DC:AC:81:A3:99:2D:4F:5A:22:74:6D:
  • 2D:12:9C:AA:02:20:33:C3:F7:2D:19:C1:00:FC:B0:82:
  • 6D:B6:1C:00:76:C2:38:9E:35:A4:60:BC:36:6C:47:EE:
  • 3A:65:B2:33:35:B8
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 07:B7:5C:1B:E5:7D:68:FF:F1:B0:C6:1D:23:15:C7:BA:
  • E6:57:7C:57:94:B7:6A:EE:BC:61:3A:1A:69:D3:A2:1C
  • Timestamp : May 23 19:48:17.124 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:AB:2E:92:90:76:0B:48:F7:67:92:93:
  • 65:76:5C:9B:B4:E6:1B:18:C5:FA:1C:85:C7:9F:BE:FF:
  • 4A:1A:79:51:CE:02:20:5F:E5:C4:0E:55:42:34:B7:1D:
  • B6:1A:C6:06:CE:A7:AF:AA:76:CD:D3:05:AB:8B:20:33:
  • BD:08:61:9F:6B:69:70