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 Mon, 25 May 2020 01:52:38 +0000

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

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

/mailservers/dfm.com.pl

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
email.dfm.com.pl
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
5 s
email1.dfm.com.pl
83.16.30.98
Results incomplete
20 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
11 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=email.dfm.com.pl,C=PL

Certificate chain
  • email.dfm.com.pl
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch
    • Unknown Authority
      Certyfikat SSL
Subject
Country (C)
  • PL
Common Name (CN)
  • email.dfm.com.pl
Alternative Names
  • email.dfm.com.pl
Issuer
Country (C)
  • PL
Organization (O)
  • home.pl S.A.
Common Name (CN)
  • Certyfikat SSL
validity period
Not valid before
2020-02-26
Not valid after
2021-02-25
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
12:AE:B8:69:1B:73:91:22:9E:45:A8:CE:B6:AD:51:E1:3D:04:66:62:1F:8E:2D:CA:21:60:CB:22:97:DF:E7:9D
SHA1
1B:06:9C:82:7C:3F:EA:87:60:AA:9C:7A:E9:AC:0B:EE:A2:D2:5C:08
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
  • 5B:2C:39:8A:EF:84:B0:06:A9:6C:82:49:C4:93:D6:66:3C:EF:67:CD
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 : A4:B9:09:90:B4:18:58:14:87:BB:13:A2:CC:67:70:0A:
  • 3C:35:98:04:F9:1B:DF:B8:E3:77:CD:0E:C8:0D:DC:10
  • Timestamp : Feb 26 07:33:01.341 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:66:AE:67:0D:23:C1:A0:6E:99:AD:35:BF:
  • 25:34:21:1B:87:02:1F:C9:29:89:A3:15:91:8F:19:37:
  • 58:4C:D3:42:02:21:00:E3:97:43:AD:8D:8E:8B:C0:B9:
  • C4:E5:CB:6F:2D:67:B5:75:4B:F1:58:1C:A6:C6:0C:35:
  • 82:67:69:33:B9:5D:D6
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 44:94:65:2E:B0:EE:CE:AF:C4:40:07:D8:A8:FE:28:C0:
  • DA:E6:82:BE:D8:CB:31:B5:3F:D3:33:96:B5:B6:81:A8
  • Timestamp : Feb 26 07:33:01.362 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:E7:92:A8:06:C7:87:37:77:1B:40:0A:
  • 44:00:91:16:02:70:CD:9A:A3:3D:A8:14:BA:9C:82:7F:
  • 81:CC:01:32:44:02:21:00:F6:CD:A6:00:D9:76:76:91:
  • B9:F7:7B:A3:1F:E6:ED:8B:62:50:B4:46:CC:BF:84:98:
  • 53:6B:88:0C:33:91:19:A8
  • 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 : Feb 26 07:33:01.327 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:37:0E:25:62:A4:B2:EA:65:66:01:EF:59:
  • 88:E3:03:F5:A1:06:FD:74:8B:83:F8:A3:55:77:BA:78:
  • B5:0F:C2:31:02:20:15:57:AF:CB:06:B4:B0:D5:D9:55:
  • D2:BA:57:0D:F9:AD:78:EF:CA:81:43:86:30:25:B7:BF:
  • AF:DC:A0:DD:3F:BF