SSL-Tools

SSL check results of backup.itos.pl

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Discover if the mail servers for backup.itos.pl 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 Sat, 12 Sep 2026 00:30:12 +0000

The mailservers of backup.itos.pl can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @backup.itos.pl addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
srv.itos.pl
78.128.99.186
Results incomplete
5
supported
not checked
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
backup.itos.pl
37.187.122.226
 20
supported
backup.itos.pl
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s

Outgoing Mails

We have not received any emails from a @backup.itos.pl address so far. Test mail delivery

Certificates

First seen at:

CN=backup.itos.pl

Certificate chain
  • backup.itos.pl
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • YE2
        • 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)
  • backup.itos.pl
Alternative Names
  • backup.itos.pl
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • YE2
validity period
Not valid before
2026-09-10
Not valid after
2026-12-09
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
Fingerprints
SHA256
A9:C9:47:72:91:F6:8A:87:B4:CB:AA:AC:52:BB:A6:AD:80:F6:99:35:3E:78:E6:57:35:53:90:CE:DA:3C:E3:1C
SHA1
1C:76:4E:2E:F2:6A:E0:E0:A8:0D:1C:77:5B:12:BC:5D:DC:29:DA:6B
X509v3 extensions
subjectKeyIdentifier
  • E7:F9:24:03:A0:30:BD:71:5E:27:8D:80:CA:9E:12:A3:6A:5F:97:CF
authorityKeyIdentifier
  • keyid:B9:59:F2:8E:CF:22:F0:86:D3:37:48:FF:76:14:18:BA:82:D8:55:87
authorityInfoAccess
  • CA Issuers - URI:http://ye2.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://ye2.c.lencr.org/58.crl
ct_precert_scts
  • 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 : Sep 10 07:33:46.998 2026 GMT
  • Extensions: 00:00:05:00:3F:94:7E:DA
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:23:F4:07:29:59:06:13:5B:D3:3A:79:B4:
  • 68:B3:C9:09:01:D2:5E:6E:ED:F2:08:69:56:A5:27:7D:
  • 3A:31:F7:AD:02:20:5A:E9:80:95:85:02:49:EB:BA:AC:
  • 6B:C9:AE:C6:8A:C6:71:EC:35:E0:5A:39:04:70:65:5F:
  • DE:1B:38:74:A8:5A
  • 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 : Sep 10 07:33:57.060 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:1D:DD:50:C8:9B:7E:CB:84:57:52:03:8C:
  • 9D:FF:BC:98:50:D3:55:A2:85:F7:92:34:55:FA:07:51:
  • C5:10:CE:0A:02:20:23:DB:07:AA:7E:69:47:3B:81:42:
  • 9C:A2:38:D8:14:37:F5:72:FA:79:2B:11:3B:A9:B5:63:
  • A9:04:FD:64:7B:B7