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SSL check results of butterna.se

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Discover if the mail servers for butterna.se 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 Sun, 05 Jul 2020 03:10:07 +0000

The mailservers of butterna.se can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @butterna.se addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mx01.cando.email
212.232.25.156
 0
supported
mx01.cando.email
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
7 s

Outgoing Mails

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

Certificates

First seen at:

CN=mx01.cando.email

Certificate chain
Subject
Common Name (CN)
  • mx01.cando.email
Alternative Names
  • mx01.cando.email
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2020-05-22
Not valid after
2020-08-20
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
63:9B:51:9C:31:FA:21:4E:EC:B6:6B:78:D7:B8:9B:2F:70:B8:F2:9A:8A:54:35:09:CD:9A:CB:20:23:C5:BD:EA
SHA1
EA:B9:A3:3C:4A:05:6B:58:75:90:24:8E:0A:0F:93:16:38:17:B2:08
X509v3 extensions
subjectKeyIdentifier
  • 25:22:4C:58:27:CC:3E:E8:54:D4:4A:1A:22:1A:B2:3A:FC:EF:94:23
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 : F0:95:A4:59:F2:00:D1:82:40:10:2D:2F:93:88:8E:AD:
  • 4B:FE:1D:47:E3:99:E1:D0:34:A6:B0:A8:AA:8E:B2:73
  • Timestamp : May 22 04:21:11.382 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:BC:47:38:7C:79:F0:87:52:68:1E:DE:
  • 75:03:0F:53:34:96:EC:6F:9F:27:D8:97:B0:9A:76:8C:
  • 1F:10:24:09:90:02:21:00:A7:E6:9B:11:86:68:B6:57:
  • 5A:63:72:03:55:D2:52:DB:59:65:D3:CA:1C:2D:DE:BD:
  • 3A:3D:6E:B8:D9:E1:F0:E6
  • 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 : May 22 04:21:11.367 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:96:A0:69:DA:62:E5:F5:2B:6B:EE:DE:
  • B9:06:87:83:FB:6A:86:B2:1A:49:04:37:AA:BC:E6:9A:
  • BE:CE:49:59:7D:02:20:03:45:4D:0D:AC:92:F5:5E:E6:
  • 19:11:E0:31:FA:F8:68:9C:20:C8:60:26:7F:0E:B5:7F:
  • 4A:59:13:B8:7C:53:CC