SSL-Tools

SSL check results of semark.dk

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Discover if the mail servers for semark.dk 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 Wed, 27 Jan 2021 07:29:17 +0000

The mailservers of semark.dk can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @semark.dk addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.semark.dk
2001:470:27:419::2
 10
supported
imap.semark.dk
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
3 s
mail.semark.dk
5.103.136.165
 10
supported
imap.semark.dk
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
3 s
adsl.semark.dk
2.110.34.219
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 @semark.dk sender addresses. Test mail delivery

Host TLS Version & Cipher
5.103.136.165.static.fibianet.dk (5.103.136.165)
TLSv1.2 ADH-AES256-GCM-SHA384

Certificates

First seen at:

CN=imap.semark.dk

Certificate chain
  • imap.semark.dk
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R3
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • DST Root CA X3 (Certificate is self-signed.)
            • remaining
            • 2048 bit
            • sha1WithRSAEncryption
Subject
Common Name (CN)
  • imap.semark.dk
Alternative Names
  • imap.semark.dk
  • mail.semark.dk
  • smtp.semark.dk
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R3
validity period
Not valid before
2020-12-30
Not valid after
2021-03-30
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
B7:12:C1:6E:77:92:85:39:E6:B3:7D:BE:45:2C:26:9A:5F:1C:73:9C:95:B5:FF:24:CF:92:15:81:98:61:55:BB
SHA1
3B:5F:40:EB:80:BF:A7:C1:46:57:6A:25:C5:B8:6E:8A:A3:67:67:77
X509v3 extensions
subjectKeyIdentifier
  • C7:62:66:D6:AF:9B:A2:24:AA:3C:F6:FA:21:20:C9:7C:53:CB:7F:07
authorityKeyIdentifier
  • keyid:14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
authorityInfoAccess
  • OCSP - URI:http://r3.o.lencr.org
  • CA Issuers - URI:http://r3.i.lencr.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 : 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 : Dec 30 22:01:23.321 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:29:46:AB:5B:2D:0A:46:14:97:C7:EE:2F:
  • CF:BE:C1:94:9C:B3:C2:1A:CD:F4:51:EC:72:A5:82:B9:
  • BB:6F:55:F2:02:20:28:E9:44:B9:20:DC:15:F2:37:1F:
  • 86:0F:A6:5A:55:48:A8:17:23:15:E3:B4:7B:51:C5:4F:
  • 7C:7E:D7:EF:A8:67
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 7D:3E:F2:F8:8F:FF:88:55:68:24:C2:C0:CA:9E:52:89:
  • 79:2B:C5:0E:78:09:7F:2E:6A:97:68:99:7E:22:F0:D7
  • Timestamp : Dec 30 22:01:23.353 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:6D:F6:CB:CD:B1:F7:02:0E:EE:A5:38:57:
  • B4:11:F9:61:A6:77:03:51:23:F9:F3:BA:E4:52:9D:7E:
  • 1D:BF:20:7D:02:21:00:E3:00:9A:CE:29:D3:BC:F9:2F:
  • 4F:9A:3B:2E:DC:62:F5:2C:EB:FF:9D:C3:5F:C5:EC:D9:
  • 9B:D0:5F:E2:D7:63:50

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.mail.semark.dk
  • DANE-TA: Trust Anchor Assertion
  • Use subject public key
  • SHA-256 Hash
valid
valid