SSL-Tools

SSL check results of howa.co.jp

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Discover if the mail servers for howa.co.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 Wed, 03 Apr 2024 06:37:24 +0000

The mailservers of howa.co.jp can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @howa.co.jp addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mg.cybermail.jp
59.84.175.228
 10
supported
*.cybermail.jp
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
12 s

Outgoing Mails

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

Certificates

First seen at:

CN=*.cybermail.jp

Certificate chain
Subject
Common Name (CN)
  • *.cybermail.jp
Alternative Names
  • *.cybermail.jp
  • cybermail.jp
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Organizational Unit (OU)
  • www.digicert.com
Common Name (CN)
  • RapidSSL TLS RSA CA G1
validity period
Not valid before
2023-07-08
Not valid after
2024-07-05
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
4B:FB:FB:28:BA:15:55:D8:07:98:EB:90:BB:B8:21:F3:2F:BC:2E:72:70:BA:58:55:0F:DB:40:77:58:0B:3E:45
SHA1
D4:5F:39:75:4E:53:CE:C9:F6:E9:BC:D7:D3:E9:D3:F5:4E:91:0C:C7
X509v3 extensions
authorityKeyIdentifier
  • keyid:0C:DB:6C:82:49:0F:4A:67:0A:B8:14:EE:7A:C4:48:52:88:EB:56:38
subjectKeyIdentifier
  • B9:50:D0:AC:B6:0B:AF:7A:E2:81:61:8D:A4:BF:75:EC:B1:2C:BB:C4
crlDistributionPoints
  • Full Name:
  • URI:http://cdp.rapidssl.com/RapidSSLTLSRSACAG1.crl
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • CPS: http://www.digicert.com/CPS
authorityInfoAccess
  • OCSP - URI:http://status.rapidssl.com
  • CA Issuers - URI:http://cacerts.rapidssl.com/RapidSSLTLSRSACAG1.crt
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : EE:CD:D0:64:D5:DB:1A:CE:C5:5C:B7:9D:B4:CD:13:A2:
  • 32:87:46:7C:BC:EC:DE:C3:51:48:59:46:71:1F:B5:9B
  • Timestamp : Jul 8 03:50:28.772 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:5A:4D:36:C2:8F:D7:06:DA:0D:F2:BA:A1:
  • 90:24:F9:32:DC:DB:35:49:C9:61:CC:FC:61:6C:E0:78:
  • 53:7C:EF:DC:02:21:00:B4:E5:67:C8:38:08:BA:9A:5F:
  • 82:99:93:83:74:5A:87:17:FA:8A:AB:DD:0A:7F:0D:64:
  • EB:F6:29:B4:9D:AA:CA
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : DA:B6:BF:6B:3F:B5:B6:22:9F:9B:C2:BB:5C:6B:E8:70:
  • 91:71:6C:BB:51:84:85:34:BD:A4:3D:30:48:D7:FB:AB
  • Timestamp : Jul 8 03:50:28.730 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:1E:92:67:EE:42:A0:2C:7C:49:41:18:1A:
  • 09:EB:18:C3:BA:27:57:2F:18:7D:55:B1:73:E8:90:DD:
  • 9C:20:BE:AD:02:20:2B:E9:46:17:D6:DE:BD:15:DC:87:
  • 13:0C:E3:2D:62:4E:A4:5B:C1:9F:82:7B:19:1C:F8:39:
  • EA:E0:12:1F:C9:CC
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 3B:53:77:75:3E:2D:B9:80:4E:8B:30:5B:06:FE:40:3B:
  • 67:D8:4F:C3:F4:C7:BD:00:0D:2D:72:6F:E1:FA:D4:17
  • Timestamp : Jul 8 03:50:28.820 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:21:9C:68:75:6A:A9:0A:AB:B8:54:3E:E6:
  • 14:80:84:91:4D:9F:15:F0:20:AE:5E:62:19:CD:7D:29:
  • B0:8D:B3:1D:02:21:00:BC:35:5A:F7:AD:6A:F0:9B:40:
  • 86:52:6F:B3:6D:54:98:D7:96:F7:E4:5C:7A:97:E4:29:
  • 70:54:09:52:D4:31:26