SSL check results of mail.b4online.de

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Discover if the mail servers for mail.b4online.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

Report created Sat, 21 Nov 2020 18:34:07 +0000

The mailservers of mail.b4online.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @mail.b4online.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.b4online.de
51.75.72.53
-
supported
mail.b4online.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s

Outgoing Mails

We have not received any emails from a @mail.b4online.de address so far. Test mail delivery

Certificates

First seen at:

CN=mail.b4online.de

Certificate chain
Subject
Common Name (CN)
  • mail.b4online.de
Alternative Names
  • imap.b4online.de
  • mail.b4online.de
  • pop3.b4online.de
  • smtp.b4online.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2020-10-13
Not valid after
2021-01-11
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
52:97:C4:C7:AD:AE:8C:09:A8:23:72:D7:E1:69:13:6F:52:F4:99:0C:94:D7:BF:74:33:DB:E5:05:99:62:83:E2
SHA1
06:35:92:52:86:0A:07:9A:DF:C0:85:8C:79:1A:FB:62:47:CA:3B:4C
X509v3 extensions
subjectKeyIdentifier
  • F4:C5:49:B5:7B:BD:27:C3:E8:97:ED:49:38:AA:42:5C:03:63:3C:6C
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 : 44:94:65:2E:B0:EE:CE:AF:C4:40:07:D8:A8:FE:28:C0:
  • DA:E6:82:BE:D8:CB:31:B5:3F:D3:33:96:B5:B6:81:A8
  • Timestamp : Oct 14 00:57:37.355 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:E1:C8:3A:EE:05:67:AB:2B:1A:DA:63:
  • 63:D4:A5:42:B8:14:32:57:DF:4F:10:0A:64:BB:78:90:
  • 47:83:62:2F:B4:02:20:7F:B1:9D:0A:40:6B:BE:9E:37:
  • 82:AF:3B:D5:CB:63:D5:A7:DF:FD:31:A3:CF:E9:DE:38:
  • 2A:48:82:93:8C:56:FC
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 7D:3E:F2:F8:8F:FF:88:55:68:24:C2:C0:CA:9E:52:89:
  • 79:2B:C5:0E:78:09:7F:2E:6A:97:68:99:7E:22:F0:D7
  • Timestamp : Oct 14 00:57:37.421 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:CB:4A:02:5B:BA:C1:17:C4:31:33:82:
  • CD:04:9B:0E:86:83:43:10:02:ED:62:49:36:13:E6:6E:
  • 9B:A1:8F:31:34:02:21:00:84:2F:0F:F3:91:1B:38:15:
  • A3:D5:2C:A9:FC:1C:15:EA:5C:13:2E:18:8A:CD:CD:5B:
  • 53:77:A1:33:C0:B2:BA:A1