SSL-Tools

SSL check results of kover.dev

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Discover if the mail servers for kover.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

JSON Refresh

Report created Fri, 15 Aug 2025 16:33:19 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.kover.dev
91.99.136.5
 10
supported
mail.kover.dev
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
5 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.kover.dev

Certificate chain
  • mail.kover.dev
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R10
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail.kover.dev
Alternative Names
  • mail.kover.dev
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R10
validity period
Not valid before
2025-08-15
Not valid after
2025-11-13
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
85:70:C5:FD:D5:7A:39:C4:25:25:C3:26:3D:16:D5:F6:B1:6E:5D:CF:0A:0A:63:33:A8:96:9E:92:2A:7A:D4:3F
SHA1
77:C8:0B:91:E9:39:0E:04:00:C5:42:6A:0D:91:4A:34:C4:91:7E:0B
X509v3 extensions
subjectKeyIdentifier
  • ED:BE:36:6A:CD:BE:57:12:CE:99:AB:C1:DF:3F:DC:5B:83:DF:B3:99
authorityKeyIdentifier
  • keyid:BB:BC:C3:47:A5:E4:BC:A9:C6:C3:A4:72:0C:10:8D:A2:35:E1:C8:E8
authorityInfoAccess
  • CA Issuers - URI:http://r10.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r10.c.lencr.org/76.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 0D:E1:F2:30:2B:D3:0D:C1:40:62:12:09:EA:55:2E:FC:
  • 47:74:7C:B1:D7:E9:30:EF:0E:42:1E:B4:7E:4E:AA:34
  • Timestamp : Aug 15 16:11:56.595 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:3A:D3:4C:52:5D:34:3C:9B:76:7D:9F:DB:
  • 9C:88:25:0B:61:45:9C:0B:66:6C:84:A7:01:7F:70:D4:
  • E0:0B:1C:A3:02:21:00:E5:D4:FE:67:99:7C:F6:73:C3:
  • 00:3F:79:D7:1E:D0:38:FF:A5:2F:8C:48:AF:41:3E:EE:
  • B0:E7:67:8C:E1:C1:AD
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : ED:3C:4B:D6:E8:06:C2:A4:A2:00:57:DB:CB:24:E2:38:
  • 01:DF:51:2F:ED:C4:86:C5:70:0F:20:DD:B7:3E:3F:E0
  • Timestamp : Aug 15 16:11:56.625 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:D5:9B:E0:59:5A:FF:14:29:94:4E:7B:
  • A8:10:17:92:AA:3F:3B:82:E8:8A:90:1D:43:9F:2A:4A:
  • 99:9F:1F:9D:F7:02:20:74:0F:E2:0F:73:1D:ED:E5:46:
  • BC:00:F8:54:2E:4D:76:7C:C1:DE:7E:ED:87:81:CD:D8:
  • 19:21:8E:56:63:EE:6D