SSL check results of teknik.io

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Discover if the mail servers for teknik.io 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 Thu, 27 Aug 2020 09:02:31 +0000

The mailservers of teknik.io 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 @teknik.io addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.teknik.io
5.79.72.163
1
supported
*.teknik.io
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • ECDHE_ECDSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
12 s

Outgoing Mails

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

Certificates

First seen at:

CN=*.teknik.io

Certificate chain
Subject
Common Name (CN)
  • *.teknik.io
Alternative Names
  • *.teknik.io
  • teknik.io
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2020-07-27
Not valid after
2020-10-25
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
D1:BF:19:A6:8A:A9:02:37:EB:FF:60:38:27:35:A1:2E:F4:62:B2:7D:27:2C:09:F8:A2:F8:33:92:2D:99:77:5F
SHA1
18:CB:16:63:F8:23:46:52:71:E3:89:E6:77:EC:12:7B:AD:52:19:D5
X509v3 extensions
subjectKeyIdentifier
  • D8:2A:CA:F2:BD:C2:DC:4C:49:EA:3B:5E:03:71:1F:37:A6:F5:26:FD
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 : B2:1E:05:CC:8B:A2:CD:8A:20:4E:87:66:F9:2B:B9:8A:
  • 25:20:67:6B:DA:FA:70:E7:B2:49:53:2D:EF:8B:90:5E
  • Timestamp : Jul 27 13:31:18.067 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:DC:2D:9D:8D:65:3D:02:CD:3C:5A:97:
  • 79:6B:F8:31:DE:5C:45:3A:88:85:D6:2D:BB:20:4C:42:
  • F8:05:6E:99:22:02:21:00:81:56:C2:BE:AD:7B:F5:C3:
  • 8D:AC:DE:7B:92:28:6C:22:F7:1E:5D:EA:44:0E:9D:A6:
  • 48:1B:C6:40:50:73:34:3C
  • 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 : Jul 27 13:31:18.121 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:BD:C1:54:82:61:96:D3:B9:EB:6A:39:
  • B9:E4:45:40:B8:8B:3B:F6:E0:3D:C6:3A:87:03:DF:CE:
  • DA:EA:54:D9:2B:02:20:10:9A:07:6B:3B:39:F3:0B:41:
  • 13:0B:2E:10:CA:9E:55:7B:55:C5:15:57:64:32:46:B3:
  • A1:59:EF:B2:7C:A7:EA