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SSL check results of mail.isential.de

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Discover if the mail servers for mail.isential.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

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Report created Sun, 15 Jun 2025 00:31:08 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.isential.de
194.164.196.166
 -
supported
mail.isential.de
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 @mail.isential.de address so far. Test mail delivery

Certificates

First seen at:

CN=mail.isential.de

Certificate chain
  • mail.isential.de
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • E5
        • remaining
        • 384 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail.isential.de
Alternative Names
  • mail.isential.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E5
validity period
Not valid before
2025-06-10
Not valid after
2025-09-08
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
0B:FB:BD:1D:D4:FD:90:76:0B:E0:E9:21:75:FB:0A:9B:35:33:46:68:8F:8F:A9:32:72:28:A0:4E:6F:D3:ED:08
SHA1
5D:5D:AC:B3:5D:1D:89:F8:98:E8:F7:71:F7:20:18:9F:E8:DC:72:5E
X509v3 extensions
subjectKeyIdentifier
  • 5E:67:76:E3:9C:F1:66:7F:E7:36:20:B9:50:ED:01:13:93:06:26:27
authorityKeyIdentifier
  • keyid:9F:2B:5F:CF:3C:21:4F:9D:04:B7:ED:2B:2C:C4:C6:70:8B:D2:D7:0D
authorityInfoAccess
  • CA Issuers - URI:http://e5.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://e5.c.lencr.org/127.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CC:FB:0F:6A:85:71:09:65:FE:95:9B:53:CE:E9:B2:7C:
  • 22:E9:85:5C:0D:97:8D:B6:A9:7E:54:C0:FE:4C:0D:B0
  • Timestamp : Jun 10 12:40:01.099 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:CA:CE:60:DF:36:40:62:0C:0C:EC:90:
  • 65:C1:2A:AC:FF:B1:1F:3A:97:49:93:D5:B9:D9:39:3E:
  • E4:27:D3:3F:55:02:21:00:A9:0A:63:45:F9:AE:2F:50:
  • CE:94:1E:6D:7F:AE:A6:18:8F:3B:57:FC:EC:B8:44:27:
  • E2:AF:46:2A:F3:E0:C2:BB
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 0D:E1:F2:30:2B:D3:0D:C1:40:62:12:09:EA:55:2E:FC:
  • 47:74:7C:B1:D7:E9:30:EF:0E:42:1E:B4:7E:4E:AA:34
  • Timestamp : Jun 10 12:40:03.092 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:5C:93:D8:73:20:0C:17:C1:6F:A2:35:EB:
  • FC:5E:3C:66:C7:6C:34:D2:AE:99:69:0C:9F:EF:3F:7F:
  • 6B:58:27:FE:02:20:38:EB:89:05:A5:F9:35:7D:13:C1:
  • 5E:B2:39:08:65:4E:13:E5:C8:FF:9C:EF:AA:C5:BA:C8:
  • 9A:12:76:1C:C7:B1