SSL-Tools

SSL check results of kwsystems.ru

NEW You can also bulk check multiple servers.

Discover if the mail servers for kwsystems.ru 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, 21 Nov 2025 01:30:13 +0000

We can not guarantee a secure connection to the mailservers of kwsystems.ru!

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

/mailservers/kwsystems.ru

Servers

Incoming Mails

These servers are responsible for incoming mails to @kwsystems.ru addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.kwsystems.ru
46.164.227.53
 10
supported
mail.kwsystems.ru
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
11 s
mail2.kwsystems.ru
213.129.100.155
Results incomplete
15 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.kwsystems.ru,O=ООО КВ СИСТЕМЫ,L=Воронеж,ST=Воронежская область,C=RU

Certificate chain
  • mail.kwsystems.ru
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Unknown Authority
      GlobalSign RSA OV SSL CA 2018
Subject
Country (C)
  • RU
State (ST)
  • Воронежская область
Locality (L)
  • Воронеж
Organization (O)
  • ООО КВ СИСТЕМЫ
Common Name (CN)
  • mail.kwsystems.ru
Alternative Names
  • mail.kwsystems.ru
  • autodiscover.kwsystems.ru
  • autodiscover.ecb-enel.ru
  • autodiscover.energetpower.com
  • autodiscover.prime-c.ru
  • mail2.kwsystems.ru
Issuer
Country (C)
  • BE
Organization (O)
  • GlobalSign nv-sa
Common Name (CN)
  • GlobalSign RSA OV SSL CA 2018
validity period
Not valid before
2025-06-25
Not valid after
2026-07-27
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
AD:C9:12:B3:6C:8F:03:C5:82:77:80:78:60:7F:C4:29:18:55:70:74:73:D3:4E:59:A0:9B:44:B5:54:A3:81:C7
SHA1
E1:82:5B:77:BE:49:18:46:59:70:5E:E5:0A:C2:21:20:B7:CD:FC:5C
X509v3 extensions
authorityInfoAccess
  • CA Issuers - URI:http://secure.globalsign.com/cacert/gsrsaovsslca2018.crt
  • OCSP - URI:http://ocsp.globalsign.com/gsrsaovsslca2018
certificatePolicies
  • Policy: 1.3.6.1.4.1.4146.1.20
  • CPS: https://www.globalsign.com/repository/
  • Policy: 2.23.140.1.2.2
crlDistributionPoints
  • Full Name:
  • URI:http://crl.globalsign.com/gsrsaovsslca2018.crl
authorityKeyIdentifier
  • keyid:F8:EF:7F:F2:CD:78:67:A8:DE:6F:8F:24:8D:88:F1:87:03:02:B3:EB
subjectKeyIdentifier
  • 89:D0:49:0C:21:89:C7:27:73:40:AE:EB:D5:C1:A6:03:7A:DA:E8:59
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65:
  • 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8
  • Timestamp : Jun 25 14:20:38.444 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:0F:E6:17:89:DB:76:91:0D:76:20:58:F4:
  • 19:23:EC:30:11:30:9D:27:9C:9E:62:0E:2D:E4:11:2E:
  • 33:4A:9A:0C:02:20:71:AF:C5:AF:29:E4:6B:BA:B6:F7:
  • 79:02:E0:89:B6:B2:FB:BE:72:00:73:40:55:26:AA:90:
  • 4E:1A:55:E5:2E:D8
  • 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 : Jun 25 14:20:38.030 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:C5:4E:A5:65:C1:38:58:C8:BC:82:44:
  • 5B:B2:93:2A:30:41:2A:EE:33:1C:B2:5D:9A:29:95:42:
  • D4:F2:FD:A5:96:02:20:31:B6:E7:2E:3F:D7:08:2A:8E:
  • B8:B3:56:5F:BC:0D:FC:81:B0:17:22:82:D9:7C:39:21:
  • E2:90:AA:F8:71:DE:B3
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB:
  • C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD
  • Timestamp : Jun 25 14:20:38.376 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:2A:F9:4A:4F:ED:7F:62:9D:CC:22:A7:C8:
  • 53:7D:B4:D9:10:8F:36:66:D2:C9:9D:92:47:9A:FE:89:
  • 17:14:1C:01:02:21:00:D0:F5:20:BA:DA:DA:4E:D8:72:
  • 29:27:7B:A1:5A:2F:17:03:AD:B7:F2:0B:85:1D:AD:C8:
  • 80:5D:9F:FB:FA:A1:5F