SSL-Tools

SSL check results of guzlewski.pl

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Discover if the mail servers for guzlewski.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, 26 Oct 2020 12:01:52 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
aspmx1.guzlewski.pl
2a02:c207:2042:2299::1
 10
supported
aspmx1.guzlewski.pl
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
7 s
aspmx1.guzlewski.pl
161.97.74.1
 10
supported
aspmx1.guzlewski.pl
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
5 s

Outgoing Mails

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

Certificates

First seen at:

CN=aspmx1.guzlewski.pl

Certificate chain
Subject
Common Name (CN)
  • aspmx1.guzlewski.pl
Alternative Names
  • aspmx1.guzlewski.pl
  • autoconfig.guzlewski.pl
  • autodiscover.guzlewski.pl
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2020-09-17
Not valid after
2020-12-16
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
3C:47:0A:E4:2B:F1:83:A8:73:67:D1:C5:D5:4E:B9:5C:84:21:B6:2E:DB:7E:95:29:D3:3B:DC:3B:8E:56:3B:A1
SHA1
4C:55:F4:D6:5C:1F:87:DE:EA:4F:E5:CE:3E:B8:B2:5B:E5:67:4F:FB
X509v3 extensions
subjectKeyIdentifier
  • BC:A6:8C:EF:56:88:FA:A9:C7:98:37:7A:2F:FA:48:BB:A5:5F:49:9E
authorityKeyIdentifier
  • keyid:A8:4A:6A:63:04:7D:DD:BA:E6:D1:39:B7:A6:45:65:EF:F3:A8:EC:A1
authorityInfoAccess
  • OCSP - URI:http://ocsp.int-x3.letsencrypt.org
  • CA Issuers - URI:http://cert.int-x3.letsencrypt.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 : 5E:A7:73:F9:DF:56:C0:E7:B5:36:48:7D:D0:49:E0:32:
  • 7A:91:9A:0C:84:A1:12:12:84:18:75:96:81:71:45:58
  • Timestamp : Sep 17 14:10:45.132 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:D7:49:FF:82:EF:11:CC:B7:BD:D9:B5:
  • E8:88:EE:B4:B6:23:71:38:65:46:74:87:BC:A2:7A:54:
  • 9F:BB:2A:68:F0:02:21:00:93:4D:20:09:29:37:DA:24:
  • 54:CA:E8:95:18:34:1E:CC:6A:6A:35:DE:49:97:40:7D:
  • 3B:A4:F2:39:49:B5:B4:42
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : B2:1E:05:CC:8B:A2:CD:8A:20:4E:87:66:F9:2B:B9:8A:
  • 25:20:67:6B:DA:FA:70:E7:B2:49:53:2D:EF:8B:90:5E
  • Timestamp : Sep 17 14:10:45.639 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:31:F0:96:03:0C:36:7B:19:B4:2C:35:68:
  • 50:85:CD:13:D8:32:50:5A:30:5A:4F:0A:BB:91:B4:06:
  • 64:06:72:47:02:20:24:4D:5D:0A:82:18:6B:CB:AE:85:
  • 9D:15:2F:F9:C3:0E:4B:66:38:71:7A:18:93:C7:FB:2C:
  • D1:15:5E:60:7A:40

DANE

DNS-based Authentication of Named Entities (DANE) is a protocol to allow X.509 certificates to be bound to DNS using TLSA records and DNSSEC.

Name Options DNSSEC Matches
_25._tcp.aspmx1.guzlewski.pl
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
valid