SSL-Tools

SSL check results of mail.kleeberg.dev

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Discover if the mail servers for mail.kleeberg.dev 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

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Report created Thu, 25 Apr 2024 12:14:04 +0000

The mailservers of mail.kleeberg.dev can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @mail.kleeberg.dev addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.kleeberg.dev
45.131.66.58
 -
supported
mail.kleeberg.dev
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.kleeberg.dev

Certificate chain
  • mail.kleeberg.dev
    • remaining
    • 256 bit
    • sha256WithRSAEncryption
      • R3
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail.kleeberg.dev
Alternative Names
  • mail.kleeberg.dev
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R3
validity period
Not valid before
2024-04-25
Not valid after
2024-07-24
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
AB:13:B6:5F:2A:84:1C:99:3F:C9:FC:10:B5:16:59:9F:1E:72:A8:FB:95:98:E5:6A:92:65:F3:6D:69:A9:3B:13
SHA1
F8:F5:C0:0E:39:5D:8B:29:47:3F:60:03:1A:1F:2A:0E:91:9F:87:2A
X509v3 extensions
subjectKeyIdentifier
  • 6C:BF:4C:FE:CF:27:53:F7:8D:14:94:60:DB:E2:58:74:09:0D:07:07
authorityKeyIdentifier
  • keyid:14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
authorityInfoAccess
  • OCSP - URI:http://r3.o.lencr.org
  • CA Issuers - URI:http://r3.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 48:B0:E3:6B:DA:A6:47:34:0F:E5:6A:02:FA:9D:30:EB:
  • 1C:52:01:CB:56:DD:2C:81:D9:BB:BF:AB:39:D8:84:73
  • Timestamp : Apr 25 12:08:15.972 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:6B:31:B4:27:71:CE:FE:BC:28:44:7C:16:
  • 46:DF:97:D1:0A:9B:44:96:9C:C1:DA:17:B3:2E:6D:87:
  • 6E:45:95:06:02:21:00:C7:2A:63:53:69:B5:17:61:2B:
  • 6A:6C:B6:50:61:17:3B:17:0D:17:56:4A:49:5D:AF:3F:
  • B3:56:AB:E1:CC:1A:40
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 3F:17:4B:4F:D7:22:47:58:94:1D:65:1C:84:BE:0D:12:
  • ED:90:37:7F:1F:85:6A:EB:C1:BF:28:85:EC:F8:64:6E
  • Timestamp : Apr 25 12:08:15.977 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:EB:5D:5E:BE:44:FE:8A:78:2D:F2:07:
  • E1:1D:A7:6E:F8:A7:4A:13:11:57:AC:71:E2:A1:B2:9C:
  • 57:17:FE:5B:15:02:20:41:72:06:EA:E0:CD:A0:1C:23:
  • 7F:43:16:52:27:24:7D:93:8D:CF:48:90:E4:25:61:9D:
  • FE:66:2C:9D:C5:93:FB