SSL-Tools

SSL check results of redbrick.de

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Discover if the mail servers for redbrick.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 Wed, 17 Jun 2020 00:33:20 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.redbrick.de
89.22.120.37
 10
supported
mail.redbrick.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
13 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.redbrick.de

Certificate chain
Subject
Common Name (CN)
  • mail.redbrick.de
Alternative Names
  • mail.redbrick.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2020-05-27
Not valid after
2020-08-25
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
47:02:FE:43:9D:41:31:76:8F:76:23:B0:0E:C5:53:2C:00:87:99:42:58:F9:A8:12:C4:45:EC:D1:6C:93:57:88
SHA1
7D:77:15:41:3A:80:57:93:08:86:DA:F7:0C:E8:A9:AC:CA:E5:BF:04
X509v3 extensions
subjectKeyIdentifier
  • E1:06:37:D0:27:3A:27:02:68:66:CB:DE:0F:27:DB:13:90:89:41:57
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 : May 27 17:23:09.541 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:63:FC:EF:A0:32:1D:62:EF:AC:C3:5D:2A:
  • B7:15:89:46:C7:4A:75:74:55:FF:CD:EF:29:E4:2C:99:
  • 94:C7:CB:26:02:20:45:04:F8:C8:F8:06:29:EE:5F:E8:
  • A7:79:B2:10:33:25:42:8B:33:6D:BD:DA:60:BC:AD:81:
  • F9:BF:BB:67:91:6F
  • 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 27 17:23:09.596 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:4A:F0:7B:57:A8:88:B2:CB:DD:23:64:F3:
  • CF:6D:BA:7E:0E:D8:04:E1:68:1C:FE:13:0B:79:BD:9B:
  • 2A:A4:80:45:02:21:00:DE:F8:77:49:DD:78:ED:CE:E3:
  • 76:E0:B5:78:24:87:3C:AD:A0:50:84:EE:5A:A1:DB:94:
  • 00:A3:95:93:B0:91:C2