SSL-Tools

SSL check results of kpg.gr.jp

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Discover if the mail servers for kpg.gr.jp 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 Thu, 26 Jun 2025 00:30:33 +0000

We can not guarantee a secure connection to the mailservers of kpg.gr.jp!

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

/mailservers/kpg.gr.jp

Servers

Incoming Mails

These servers are responsible for incoming mails to @kpg.gr.jp addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.kpg.gr.jp
210.134.51.6
 10
supported
*.kagoya.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • ECDHE_RSA_WITH_RC4_128_SHA
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
21 s
mail.kpg.gr.jp
210.134.58.254
Results incomplete
10 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
11 s
mail.kpg.gr.jp
210.134.58.253
 10
supported
*.kagoya.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • ECDHE_RSA_WITH_RC4_128_SHA
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
21 s
mail.kpg.gr.jp
210.134.51.7
 10
supported
*.kagoya.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • ECDHE_RSA_WITH_RC4_128_SHA
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
22 s
dmail.kagoya.net
210.134.51.6
 20
supported
*.kagoya.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • ECDHE_RSA_WITH_RC4_128_SHA
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
22 s
dmail.kagoya.net
210.134.58.254
Results incomplete
20 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
11 s
dmail.kagoya.net
210.134.58.253
 20
supported
*.kagoya.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • ECDHE_RSA_WITH_RC4_128_SHA
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
21 s
dmail.kagoya.net
210.134.51.7
 20
supported
*.kagoya.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • ECDHE_RSA_WITH_RC4_128_SHA
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
21 s

Outgoing Mails

We have not received any emails from a @kpg.gr.jp address so far. Test mail delivery

Certificates

First seen at:

CN=*.kagoya.net

Certificate chain
Subject
Common Name (CN)
  • *.kagoya.net
Alternative Names
  • *.kagoya.net
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Organizational Unit (OU)
  • www.digicert.com
Common Name (CN)
  • GeoTrust TLS RSA CA G1
validity period
Not valid before
2024-09-06
Not valid after
2025-10-05
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
4E:06:5B:C3:5C:D4:A1:37:94:A0:97:94:A2:2D:E9:4A:39:9C:6B:D9:C7:27:D7:05:9E:19:6C:AD:61:13:70:16
SHA1
4A:59:B7:6B:1E:4D:66:23:F4:17:F8:31:60:8C:DD:75:FE:FE:01:D6
X509v3 extensions
authorityKeyIdentifier
  • keyid:94:4F:D4:5D:8B:E4:A4:E2:A6:80:FE:FD:D8:F9:00:EF:A3:BE:02:57
subjectKeyIdentifier
  • AE:A9:52:F4:D0:12:36:E7:45:D3:C2:71:41:49:26:D5:08:0A:49:11
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • CPS: http://www.digicert.com/CPS
crlDistributionPoints
  • Full Name:
  • URI:http://cdp.geotrust.com/GeoTrustTLSRSACAG1.crl
authorityInfoAccess
  • OCSP - URI:http://status.geotrust.com
  • CA Issuers - URI:http://cacerts.geotrust.com/GeoTrustTLSRSACAG1.crt
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : DD:DC:CA:34:95:D7:E1:16:05:E7:95:32:FA:C7:9F:F8:
  • 3D:1C:50:DF:DB:00:3A:14:12:76:0A:2C:AC:BB:C8:2A
  • Timestamp : Sep 6 01:26:00.697 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:9F:D3:54:E1:67:7C:09:3D:CC:37:CB:
  • B1:18:30:B1:A0:33:68:69:CF:EF:D4:DD:4C:F7:02:52:
  • 9B:06:57:24:A9:02:20:7D:F4:6A:80:FF:4A:1E:F8:6E:
  • 6C:49:29:C9:2F:87:BD:04:63:13:CC:C7:E9:06:A5:3D:
  • A3:A0:33:8A:0C:C3:D1
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 7D:59:1E:12:E1:78:2A:7B:1C:61:67:7C:5E:FD:F8:D0:
  • 87:5C:14:A0:4E:95:9E:B9:03:2F:D9:0E:8C:2E:79:B8
  • Timestamp : Sep 6 01:26:00.630 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:B6:5F:DC:D3:92:B1:AA:C2:B1:53:F4:
  • 49:7F:CC:F1:45:4C:A8:7D:E8:61:6B:EB:30:95:7E:7E:
  • 88:33:93:5C:9B:02:20:1D:82:B3:C5:AD:8A:01:2D:27:
  • 53:45:09:C7:07:9B:E2:1F:84:15:C1:B7:34:D0:E4:05:
  • 90:76:12:9C:16:A7:20
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : E6:D2:31:63:40:77:8C:C1:10:41:06:D7:71:B9:CE:C1:
  • D2:40:F6:96:84:86:FB:BA:87:32:1D:FD:1E:37:8E:50
  • Timestamp : Sep 6 01:26:00.655 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:15:58:2D:34:43:39:CE:4A:67:47:8A:E6:
  • 21:6F:A2:E2:FF:31:3F:E8:31:1A:0E:43:41:95:95:BC:
  • F1:CE:C7:5D:02:20:7E:75:CF:F4:02:64:DA:97:4A:4A:
  • 22:2B:1A:84:E0:D7:0E:93:45:2C:48:1B:E4:49:26:EF:
  • BB:25:F6:B9:8E:AE