Can't send email on Roundcube

Hello,

I’m unable to send or receive email on Roundcube
I tried severals configuration with or without SMTP.
i have SMTP error when i try to send email, even when it is not checked.

My configuration
Debian 12
Hestia CP
Self hosted, no restriction from my ISP
Cloudflare with no proxy for email records

I am able to send mail on Hesk CP with SMTP, but not with Prestashop or Roundcube

How can i resolve this ?

Thanks you !

Best regards.

Problem solved with good SMTP parameters

thanks you