SSL-Tools

SSL check results of crosslab.ru

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Discover if the mail servers for crosslab.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 Sat, 06 Mar 2021 07:18:36 +0000

The mailservers of crosslab.ru can be reached through a secure connection.

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.crosslab.ru
89.208.145.6
 10
supported
mail.crosslab.ru
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
9 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.crosslab.ru

Certificate chain
  • mail.crosslab.ru
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R3
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • DST Root CA X3 (Certificate is self-signed.)
            • remaining
            • 2048 bit
            • sha1WithRSAEncryption
Subject
Common Name (CN)
  • mail.crosslab.ru
Alternative Names
  • mail.crosslab.ru
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R3
validity period
Not valid before
2021-02-01
Not valid after
2021-05-02
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
FF:E6:1A:75:EE:FA:0C:CB:83:49:5F:42:47:C2:8D:FA:BE:01:B0:E2:51:A4:E0:51:CD:6E:4A:59:DF:B2:34:81
SHA1
D7:F8:AB:15:5E:49:40:74:A2:5C:EF:24:AF:EC:01:83:58:96:8C:46
X509v3 extensions
subjectKeyIdentifier
  • 42:5F:5C:9D:B1:76:2A:A8:FD:1E:9B:BA:F4:99:83:AA:85:83:13:B3
authorityKeyIdentifier
  • keyid:14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
authorityInfoAccess
  • OCSP - URI:http://r3.o.lencr.org
  • CA Issuers - URI:http://r3.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • Policy: 1.3.6.1.4.1.44947.1.1.1
  • CPS: http://cps.letsencrypt.org
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : F6:5C:94:2F:D1:77:30:22:14:54:18:08:30:94:56:8E:
  • E3:4D:13:19:33:BF:DF:0C:2F:20:0B:CC:4E:F1:64:E3
  • Timestamp : Feb 1 15:19:43.602 2021 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:16:15:D2:0C:8F:4A:06:85:31:CD:A9:D3:
  • D0:51:2C:74:86:FF:77:75:48:4D:C5:2E:EE:79:C1:C9:
  • B0:4E:48:52:02:21:00:B9:1B:14:9D:95:E9:A6:EE:81:
  • C0:C0:58:4A:A1:91:22:34:F1:64:8B:74:8B:CD:4C:4C:
  • EA:0F:D6:B2:87:5B:3F
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 6F:53:76:AC:31:F0:31:19:D8:99:00:A4:51:15:FF:77:
  • 15:1C:11:D9:02:C1:00:29:06:8D:B2:08:9A:37:D9:13
  • Timestamp : Feb 1 15:19:43.652 2021 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:D8:42:CA:DE:9B:18:09:A3:CA:52:28:
  • 4A:66:F4:16:AD:23:C8:4F:C9:A0:CF:14:0F:C9:3B:7D:
  • B6:52:C0:DF:0C:02:21:00:EA:D1:06:C5:45:BA:7E:05:
  • 2B:6F:B4:63:35:B2:D5:D7:65:8B:54:B1:09:F3:31:D3:
  • AD:5F:41:2D:8E:66:6C:C8