Are those issues are related to let's Encrypt

one of the clients has run a security scan for the site web that I am working on, so he found some issues that I need to fix, I don’t know if they are related to Plesk or to Let’s encrypt

My domain is:

It produced this output:
these issues are :
FTP Unencrypted Cleartext Login
// solution: Enable FTPS or enforce the connection via the ‘AUTH TLS’

SMTP Unencrypted Cleartext Login
//solution: Enable SMTPS or enforce the connection via the ‘STARTTLS’ command

POP3 Unencrypted Cleartext Login
Configure the remote server to always enforce encrypted connections via SSL/TLS with the ‘STLS’ command

SSL/TLS: Diffie-Hellman Key Exchange Insufficient DH Group Strength Vulnerability…
Deploy (Ephemeral) Elliptic-Curve Diffie-Hellman (ECDHE) or use a 2048-bit or stronger Diffie-Hellman group

I have been searching how to apply these solutions so long but I could not find a way if anyone knows how I would be grateful
I am using Plesk onyx, Nginx with a user account

My web server is (include version): Plesk Onyx 17.8.11

The operating system my web server runs on is (include version): windows 10

My hosting provider, if applicable, is: ovh

I can login to a root shell on my machine (yes or no, or I don’t know): yes

I’m using a control panel to manage my site (no, or provide the name and version of the control panel):yes

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot):

Hi @elaahidri1

that’s not certificate related, that’s a not so good configuration.

You can use the same certificate with a good and a bad configuration.

Fix these things in your ftp / mailserver and in your webserver configuration.

1 Like

thank you very much for the fast relay


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