SSL check results of zerobit.email

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Discover if the mail servers for zerobit.email 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, 27 May 2020 18:25:45 +0000

The mailservers of zerobit.email 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 @zerobit.email addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.zerobit.email
46.28.206.14
0
supported
mail.zerobit.email
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • ECDHE_RSA_WITH_RC4_128_SHA
  • SSL_RSA_EXPORT_WITH_RC4_40_MD5
  • 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 @zerobit.email address so far. Test mail delivery

Certificates

First seen at:

CN=mail.zerobit.email

Certificate chain
Subject
Common Name (CN)
  • mail.zerobit.email
Alternative Names
  • mail.zerobit.email
  • zerobit.email
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2020-04-16
Not valid after
2020-07-15
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
A5:3D:4F:1B:C9:AB:4C:C8:D1:AD:C5:7E:D0:58:F4:87:47:8E:1B:29:58:C1:43:27:73:43:1C:89:69:96:75:08
SHA1
51:CC:99:E6:84:27:01:1F:12:C0:08:5B:EF:33:AD:F5:8F:3E:29:90
X509v3 extensions
subjectKeyIdentifier
  • 45:CD:80:E5:E0:0D:C3:EB:D4:87:CF:AC:97:1F:DE:89:4E:7F:0E:1E
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 : E7:12:F2:B0:37:7E:1A:62:FB:8E:C9:0C:61:84:F1:EA:
  • 7B:37:CB:56:1D:11:26:5B:F3:E0:F3:4B:F2:41:54:6E
  • Timestamp : Apr 16 19:38:23.188 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:73:C3:8B:7F:C4:08:01:C9:55:77:A3:81:
  • 51:58:04:67:25:B5:7E:69:89:C3:05:4B:6D:5E:DB:39:
  • 5A:5C:CF:0E:02:20:7B:20:74:22:96:92:C6:72:E2:EC:
  • 3F:68:E3:8B:4C:EA:ED:B7:64:08:1F:07:F6:4C:A6:96:
  • 48:13:CA:9E:2F:2A
  • 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 : Apr 16 19:38:23.174 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:8A:01:AC:5E:39:B3:CF:49:91:6F:99:
  • 60:83:D4:8E:52:DB:5B:3A:66:69:FF:4C:E8:56:A8:CE:
  • B9:AD:F7:75:22:02:21:00:D4:B1:58:4C:89:3D:02:3C:
  • DE:76:F8:C0:01:7A:25:56:18:1C:4F:1F:23:4D:57:A1:
  • D8:66:7D:21:55:D7:F3:72