SSL-Tools

SSL check results of mail.rsonesoft.com

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Discover if the mail servers for mail.rsonesoft.com 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 Mon, 31 Aug 2026 05:41:58 +0000

The mailservers of mail.rsonesoft.com can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @mail.rsonesoft.com addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.rsonesoft.com
218.50.158.166
 -
supported
*.rsonesoft.com
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
21 s

Outgoing Mails

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

Certificates

First seen at:

CN=*.rsonesoft.com

Certificate chain
  • *.rsonesoft.com
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • YE1
        • remaining
        • 384 bit
        • ecdsa-with-SHA384
          • Root YE
            • remaining
            • 384 bit
            • ecdsa-with-SHA384
              • ISRG Root X2 (Certificate is self-signed.)
                • remaining
                • 384 bit
                • ecdsa-with-SHA384
Subject
Common Name (CN)
  • *.rsonesoft.com
Alternative Names
  • *.rsonesoft.com
  • rsonesoft.com
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • YE1
validity period
Not valid before
2026-07-11
Not valid after
2026-10-09
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
Fingerprints
SHA256
56:99:9F:E9:0A:C6:8A:39:0C:06:E6:FB:33:0E:3F:9F:26:24:45:0E:93:F2:09:1E:98:42:5A:85:BC:78:E0:01
SHA1
1E:D8:F9:D1:E6:65:F2:B5:22:54:53:8A:91:7D:29:8B:4B:8B:34:12
X509v3 extensions
subjectKeyIdentifier
  • C3:C3:55:15:32:39:0B:DB:B2:1A:AE:3D:65:FF:C7:DC:CB:44:3E:32
authorityKeyIdentifier
  • keyid:BB:20:CA:47:0B:FE:D7:E5:9C:F9:8F:09:2A:A3:8C:37:45:B1:BC:D8
authorityInfoAccess
  • CA Issuers - URI:http://ye1.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://ye1.c.lencr.org/104.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E:
  • F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7
  • Timestamp : Jul 11 06:25:26.189 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:86:52:33:05:34:3B:5C:07:AD:24:3C:
  • 2C:F0:39:8B:D8:E9:E0:E7:C7:64:3E:22:52:7E:01:FF:
  • 82:4B:DA:2C:9F:02:21:00:CC:ED:AD:1C:0C:E7:A3:D4:
  • AF:6A:26:D2:6F:42:25:77:22:0F:8B:1F:96:08:B6:C6:
  • 9E:C9:1A:9C:A0:6B:5D:F5
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 26:E3:64:6E:58:69:21:23:BC:34:3F:47:24:35:9B:37:
  • 92:CD:24:5A:88:D8:15:D3:93:33:FD:99:18:AB:47:23
  • Timestamp : Jul 11 06:25:25.584 2026 GMT
  • Extensions: 00:00:05:00:27:EA:B1:7A
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:9C:6E:F9:36:EC:DC:D9:DE:9F:F4:71:
  • 21:6D:19:1B:CC:60:8A:13:FC:E3:AE:1D:56:80:B8:1B:
  • BB:50:67:C3:61:02:21:00:97:68:73:51:89:7F:EE:0F:
  • 97:D4:FD:52:A4:7B:E3:AA:86:37:C7:77:1B:66:DD:A2:
  • 0A:45:4C:70:34:77:EE:AD

DANE

DNS-based Authentication of Named Entities (DANE) is a protocol to allow X.509 certificates to be bound to DNS using TLSA records and DNSSEC.

Name Options DNSSEC Matches
_25._tcp.mail.rsonesoft.com
  • DANE-TA: Trust Anchor Assertion
  • Use subject public key
  • SHA-256 Hash
valid
valid