SSL-Tools

SSL check results of michaelclass.de

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Discover if the mail servers for michaelclass.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 Sun, 25 Oct 2020 01:05:11 +0000

We can not guarantee a secure connection to the mailservers of michaelclass.de!

Please contact the operator of michaelclass.de and ask him or her to solve this problem. This result stays accessible under the following address:

/mailservers/michaelclass.de

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.michaelclass.de
194.140.127.68
 10
supported
mail.michaelclass.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
3 s
mail.michaelclass.dynv6.net
2001:470:1f0b:45e:5054:ff:fe6b:61b7
Results incomplete
15 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s
oy7sf86hupjnsm0z.myfritz.net
2001:470:1f0a:45b::2
Results incomplete
20 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s
oy7sf86hupjnsm0z.myfritz.net
194.140.127.68
 20
supported
mail.michaelclass.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
3 s

Outgoing Mails

We have received emails from these servers with @michaelclass.de sender addresses. Test mail delivery

Host TLS Version & Cipher
unknown (194.140.127.68)
TLSv1.3 TLS_AES_256_GCM_SHA384

Certificates

First seen at:

CN=mail.michaelclass.de

Certificate chain
Subject
Common Name (CN)
  • mail.michaelclass.de
Alternative Names
  • mail.michaelclass.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2020-10-19
Not valid after
2021-01-17
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
14:EB:7A:FD:A5:29:6D:85:F9:65:8E:A9:3A:BE:11:6E:5A:9C:C6:9B:66:33:A8:F0:86:8D:F1:A8:EE:83:C3:F2
SHA1
BB:BE:79:5C:22:80:F3:D6:4E:58:66:E2:67:8A:05:DC:D1:3B:F6:BA
X509v3 extensions
subjectKeyIdentifier
  • C4:48:1D:8C:64:32:71:15:F2:8D:EA:59:7D:78:CB:96:99:CA:55:96
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 : 5C:DC:43:92:FE:E6:AB:45:44:B1:5E:9A:D4:56:E6:10:
  • 37:FB:D5:FA:47:DC:A1:73:94:B2:5E:E6:F6:C7:0E:CA
  • Timestamp : Oct 19 12:09:41.123 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:76:2B:87:9C:AD:BF:E6:D8:E4:46:43:BA:
  • 9D:FF:8F:BC:D3:6B:47:58:28:EB:7C:A1:35:8C:5E:2C:
  • 85:08:11:FD:02:21:00:EF:E1:62:9E:0D:4D:45:2F:8D:
  • 18:E2:0F:16:5A:22:55:11:71:7C:B3:99:2D:5D:61:8A:
  • 61:E6:43:D9:72:4E:2C
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : F6:5C:94:2F:D1:77:30:22:14:54:18:08:30:94:56:8E:
  • E3:4D:13:19:33:BF:DF:0C:2F:20:0B:CC:4E:F1:64:E3
  • Timestamp : Oct 19 12:09:41.119 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:70:F5:D1:30:09:05:D7:F0:23:10:15:60:
  • 8A:2A:4B:66:47:D8:9E:CE:8D:81:48:83:88:F4:24:BA:
  • E5:85:8D:39:02:20:69:99:98:79:F2:08:04:3C:66:40:
  • 57:F4:5B:42:62:48:FF:15:9D:9B:80:8B:B5:CF:9C:14:
  • 56:48:1F:CD:BE:FD