SSL-Tools

SSL check results of dfm.com.pl

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Discover if the mail servers for dfm.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 Sat, 10 Feb 2024 12:55:32 +0000

The mailservers of dfm.com.pl can be reached through an encrypted connection.

However, we found problems that may affect the security.

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
email2.dfm.com.pl
176.97.255.251
 10
supported
*.dfm.com.pl
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s
email1.dfm.com.pl
83.16.30.98
 20
supported
*.dfm.com.pl
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
3 s

Outgoing Mails

We have received emails from these servers with @dfm.com.pl sender addresses. Test mail delivery

Host TLS Version & Cipher
email2.dfm.com.pl (176.97.255.251)
TLSv1.2 ADH-AES256-GCM-SHA384

Certificates

First seen at:

CN=*.dfm.com.pl

Certificate chain
  • *.dfm.com.pl
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Unknown Authority
      Certyfikat SSL
Subject
Common Name (CN)
  • *.dfm.com.pl
Alternative Names
  • *.dfm.com.pl
  • dfm.com.pl
Issuer
Country (C)
  • PL
Organization (O)
  • home.pl S.A.
Common Name (CN)
  • Certyfikat SSL
validity period
Not valid before
2023-11-06
Not valid after
2024-11-30
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
EA:0D:B2:B9:18:B3:BD:92:8E:2D:BA:1A:5F:B9:2C:B6:26:54:AF:AC:60:30:BF:B2:7D:F3:C0:19:02:72:94:FA
SHA1
B8:48:6F:96:E9:41:0B:91:9E:DE:1D:B4:8F:E7:D0:37:44:6D:68:C2
X509v3 extensions
crlDistributionPoints
  • Full Name:
  • URI:http://crl.certum.pl/hsha2.crl
authorityInfoAccess
  • OCSP - URI:http://h.ocsp-certum.com
  • CA Issuers - URI:http://repository.certum.pl/hsha2.cer
authorityKeyIdentifier
  • keyid:3D:91:B6:CC:11:7B:EB:E4:66:11:AC:D2:D2:07:CB:A9:A4:80:73:31
subjectKeyIdentifier
  • 0F:41:89:0A:A4:5B:52:54:7B:25:B6:6E:CC:09:E1:C5:A8:A4:C9:F1
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • Policy: 1.2.616.1.113527.2.5.1.9.6.3
  • CPS: https://www.certum.pl/CPS
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : EE:CD:D0:64:D5:DB:1A:CE:C5:5C:B7:9D:B4:CD:13:A2:
  • 32:87:46:7C:BC:EC:DE:C3:51:48:59:46:71:1F:B5:9B
  • Timestamp : Nov 6 01:40:21.620 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:5B:8C:FA:1B:3D:3E:6E:FB:7D:A6:DA:A2:
  • B8:71:FC:AB:EC:60:7D:3A:C2:57:27:21:7D:CF:F9:DC:
  • 68:65:CA:64:02:20:7B:D3:EE:D5:35:2B:A3:08:73:1A:
  • A0:99:2C:8F:20:4D:3B:6C:E2:59:0B:FA:3C:A6:89:E0:
  • 7D:BF:F3:FC:84:DE
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 48:B0:E3:6B:DA:A6:47:34:0F:E5:6A:02:FA:9D:30:EB:
  • 1C:52:01:CB:56:DD:2C:81:D9:BB:BF:AB:39:D8:84:73
  • Timestamp : Nov 6 01:40:21.642 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:BA:A5:AD:9F:9B:7C:CC:0D:FD:DE:CA:
  • 7F:82:C2:C9:2E:4D:22:E3:FD:70:FC:5F:03:81:93:D1:
  • CF:FA:6C:8F:78:02:20:68:96:69:C0:D1:8C:DA:B0:B7:
  • AF:09:10:50:9E:55:EA:99:B0:57:FC:17:66:2B:0A:93:
  • 43:44:37:71:C5:16:2A
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 55:81:D4:C2:16:90:36:01:4A:EA:0B:9B:57:3C:53:F0:
  • C0:E4:38:78:70:25:08:17:2F:A3:AA:1D:07:13:D3:0C
  • Timestamp : Nov 6 01:40:21.836 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:8B:35:FA:D5:2B:59:09:70:D4:B9:48:
  • ED:FA:C2:4D:04:BD:AB:07:08:75:94:92:BF:9C:F0:A1:
  • 74:8B:BE:58:CB:02:20:74:28:D7:A3:47:D9:59:15:AF:
  • 87:CB:45:F9:A1:E3:88:9F:2E:CB:3F:B5:5B:1F:74:69:
  • 12:B8:BC:41:C9:26:0D