SSL-Tools

SSL check results of smtp.boldem.cz

NEW You can also bulk check multiple servers.

Discover if the mail servers for smtp.boldem.cz 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 Tue, 23 Feb 2021 12:17:27 +0000

The mailservers of smtp.boldem.cz can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @smtp.boldem.cz addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
smtp.boldem.cz
185.32.160.193
 -
supported
smtp.boldem.cz
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s

Outgoing Mails

We have not received any emails from a @smtp.boldem.cz address so far. Test mail delivery

Certificates

First seen at:

CN=smtp.boldem.cz

Certificate chain
  • smtp.boldem.cz
    • 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)
  • smtp.boldem.cz
Alternative Names
  • smtp.boldem.cz
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R3
validity period
Not valid before
2021-01-26
Not valid after
2021-04-26
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
0F:91:8F:8A:50:54:F5:48:59:EA:99:69:A1:DA:6C:EF:95:96:BA:7D:DA:A3:90:B0:7B:73:21:6C:BF:F3:12:C7
SHA1
73:AD:CD:74:A2:46:BB:E9:5C:0C:52:93:FF:38:DF:3D:CC:62:FE:3E
X509v3 extensions
subjectKeyIdentifier
  • 52:D2:4A:B4:3A:E9:09:08:99:D2:39:AF:05:5E:16:47:68:09:8E:FA
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 : F6:5C:94:2F:D1:77:30:22:14:54:18:08:30:94:56:8E:
  • E3:4D:13:19:33:BF:DF:0C:2F:20:0B:CC:4E:F1:64:E3
  • Timestamp : Jan 26 11:09:30.813 2021 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:7D:0C:10:B8:44:CC:1F:43:04:1C:88:80:
  • 71:F9:75:00:55:79:4B:BB:D6:C6:40:BD:3F:B4:4C:96:
  • DB:66:78:29:02:21:00:93:4D:37:25:F9:0A:2B:AB:AE:
  • BB:55:4F:DD:D7:F8:83:F4:A0:A3:86:68:F6:40:B2:52:
  • B4:63:18:B1:AF:2F:14
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 5C:DC:43:92:FE:E6:AB:45:44:B1:5E:9A:D4:56:E6:10:
  • 37:FB:D5:FA:47:DC:A1:73:94:B2:5E:E6:F6:C7:0E:CA
  • Timestamp : Jan 26 11:09:31.230 2021 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:DB:D7:70:59:56:32:49:AD:50:A7:0B:
  • B9:54:A9:9C:D2:04:84:AE:D9:6B:91:FB:23:88:89:D2:
  • 08:1A:30:79:C5:02:21:00:DA:45:2F:61:0F:01:40:9F:
  • 52:45:C3:B4:53:77:CB:1D:37:05:D1:BD:0B:FF:17:33:
  • BF:7D:37:52:19:73:87:65