SSL-Tools

SSL check results of enertel.com.pl

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Discover if the mail servers for enertel.com.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

JSON Refresh

Report created Mon, 06 Jul 2026 11:31:50 +0000

We can not guarantee a secure connection to the mailservers of enertel.com.pl!

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

/mailservers/enertel.com.pl

Servers

Incoming Mails

These servers are responsible for incoming mails to @enertel.com.pl addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
en17n.enertel.com.pl
2a0a:3a40:1004::17
 10
supported
email.enertel.com.pl
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
22 s
en17n.enertel.com.pl
194.92.49.154
 10
supported
email.enertel.com.pl
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
12 s
en17g.enertel.com.pl
77.65.164.242
 20
supported
email.enertel.com.pl
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
12 s
en17t.enertel.com.pl
83.13.207.78
Results incomplete
30
unsupported
not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
12 s

Outgoing Mails

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

Certificates

First seen at:

CN=email.enertel.com.pl

Certificate chain
  • email.enertel.com.pl
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • E7
        • remaining
        • 384 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • email.enertel.com.pl
Alternative Names
  • email.enertel.com.pl
  • en17.enertel.com.pl
  • en17g.enertel.com.pl
  • en17n.enertel.com.pl
  • en17t.enertel.com.pl
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E7
validity period
Not valid before
2026-05-06
Not valid after
2026-08-04
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
Fingerprints
SHA256
CB:5D:07:6B:32:C7:9D:F3:4D:C3:0D:69:5B:86:D3:35:16:C5:64:FF:7F:17:DC:38:61:C0:CB:32:B3:20:12:34
SHA1
8B:3D:3C:67:D3:2F:2B:9E:F7:55:11:9B:61:D4:8E:EF:CF:28:02:BB
X509v3 extensions
subjectKeyIdentifier
  • 59:48:EA:C6:D1:CE:6C:07:B0:1B:EC:0F:08:45:88:64:54:6B:54:44
authorityKeyIdentifier
  • keyid:AE:48:9E:DC:87:1D:44:A0:6F:DA:A2:E5:60:74:04:78:C2:9C:00:80
authorityInfoAccess
  • CA Issuers - URI:http://e7.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://e7.c.lencr.org/29.crl
ct_precert_scts
  • 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 : May 6 12:00:34.389 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:A4:BC:37:64:0B:E3:3B:58:DB:3C:8F:
  • A3:B3:65:F1:AE:74:C5:12:01:E6:F9:3F:E2:0E:D1:6E:
  • 5E:FB:B1:AB:EF:02:21:00:AE:3D:93:2F:7E:FC:11:AE:
  • 8D:E9:58:6C:69:46:42:1B:9C:CD:32:BB:00:43:3C:09:
  • D2:89:A6:62:46:F5:F9:23
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : A8:26:CB:E3:0A:C6:35:12:46:53:3F:E0:65:F1:4F:19:
  • D9:6E:19:08:13:C4:1D:D9:6D:79:00:B3:12:3C:55:27
  • Timestamp : May 6 12:00:34.498 2026 GMT
  • Extensions: 00:00:05:00:09:C6:37:4B
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:CA:61:38:75:65:F0:A8:FA:48:EB:CB:
  • F6:BC:19:A2:4B:BA:13:4B:65:53:51:C1:D2:61:FF:F3:
  • 70:62:96:05:47:02:20:38:27:4D:E2:6B:32:84:84:A7:
  • 7D:20:84:D2:91:DF:67:86:3D:D1:09:84:E2:44:A8:FF:
  • 1C:6E:04:63:39:77:C3