SSL check results of darndt.de

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Discover if the mail servers for darndt.de 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

Report created Thu, 06 Dec 2018 20:45:35 +0000

The mailservers of darndt.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @darndt.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mx1.darndt.de
2a03:4000:1e:199::1
10
supported
darndt.de
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
10 s
mx1.darndt.de
185.207.105.123
10
supported
darndt.de
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
8 s
mx2.darndt.de
2a01:4f8:1c17:59a2::1
50
supported
darndt.de
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
10 s
mx2.darndt.de
138.201.157.163
50
supported
darndt.de
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
8 s

Outgoing Mails

We have received emails from these servers with @darndt.de sender addresses. Test mail delivery

Host TLS Version & Cipher
office.darndt.de (IPv6:2a03:4000:6:40b2::1)
TLSv1.2 AECDH-AES256-SHA
mx.darndt.de (IPv6:2a03:4000:1e:199::1)
TLSv1.2 DHE-RSA-AES256-GCM-SHA384
mx2.darndt.de (IPv6:2a03:4000:2:9fb::1)
TLSv1.2 DHE-RSA-AES256-GCM-SHA384

Certificates

First seen at:

CN=darndt.de

Certificate chain
Subject
Common Name (CN)
  • darndt.de
Alternative Names
  • *.darndt.de
  • *.darndt.eu
  • *.darndt121180.de
  • *.der-arndt.de
  • *.derarndt.de
  • *.landwehr-net.de
  • *.larndt.de
  • *.oostkapelle-urlaub.de
  • darndt.de
  • darndt.eu
  • darndt121180.de
  • der-arndt.de
  • derarndt.de
  • landwehr-net.de
  • larndt.de
  • oostkapelle-urlaub.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2018-11-23
Not valid after
2019-02-21
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
FA:4E:1C:14:F5:84:95:C1:4D:58:53:FB:D1:7B:B6:BB:65:59:C5:28:52:4B:E8:96:B4:F5:85:CC:4B:90:13:58
SHA1
AC:4F:AD:A5:B9:B5:7A:8E:8A:9C:B4:78:AC:68:1D:C4:00:6A:09:64
X509v3 extensions
subjectKeyIdentifier
  • 56:B3:C4:DD:48:7E:22:A9:12:9C:BD:0E:62:99:3B:69:3D:AE:D9:BF
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 : 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 23 22:20:00.563 2018 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:DF:B7:FA:9B:35:CE:E0:24:A0:2F:71:
  • BA:01:12:AF:62:7B:E1:EF:16:E7:E2:1C:9B:FC:D3:91:
  • 20:6A:EF:D7:6E:02:21:00:E0:FE:2E:87:F8:DF:13:BD:
  • D9:D9:48:23:58:66:AB:B7:9A:C9:11:C2:63:59:50:16:
  • 0C:5D:0C:2C:E1:57:19:A9
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 63:F2:DB:CD:E8:3B:CC:2C:CF:0B:72:84:27:57:6B:33:
  • A4:8D:61:77:8F:BD:75:A6:38:B1:C7:68:54:4B:D8:8D
  • Timestamp : Nov 23 22:20:00.558 2018 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:04:52:0D:37:39:05:C7:A8:49:3C:07:FB:
  • 1F:F8:47:94:D6:18:B3:AD:FE:DF:C9:65:32:D6:03:FF:
  • 8E:B1:DE:54:02:20:1B:B1:88:13:08:8C:DF:86:0D:1E:
  • EB:32:45:A5:87:6E:D0:AF:B6:D7:BA:8F:99:D2:8F:81:
  • 99:0E:27:9E:A9:3C

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.mx2.darndt.de
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
valid
_25._tcp.mx1.darndt.de
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
valid