How to properly attach an LE certificate to ProFTPD?

Question

ubuntu

Hello! I ran into a problem that I can not connect via FTP with TLS (certificate from LE) ... OS: Ubuntu Server 20.04.1

Here are the logs and configs:
tls.log
https://cloud.roffdaniel.com/f/789825e4b60242d49d91/

tls .conf

TLSEngine on
TLSLog /var/log/proftpd/tls.log
TLSProtocol SSLv3 TLSv1 TLSv1.1 TLSv1.2 TLSv1.3
TLSRSACertificateFile /etc/letsencrypt/live/server.roffdaniel.com/cert.pem
TLSRSACertificateKeyFile /etc/letsencrypt/live/ server.roffdaniel.com/privkey.pem
TLSCACertificateFile /etc/letsencrypt/live/server.roffdaniel.com/chain.pem
TLSOptions NoCertRequest EnableDiags NoSessionReuseRequired
TLSVerifyClient off

I just don't have any more ideas, that's why I came here. Thanks in advance!

Answer 1

working conf with agents
TLSEngine on
TLSServerCipherPreference on
TLSLog /var/log/ftpd/tls.log
TLSProtocol TLSv1.2 TLSv1.3
TLSOptions NoSessionReuseRequired
TLSRenegotiate none
TLSRSACertificateFile /etc/letsencrypt/live/***/fullchain.pem
TLSRSACertificateKeyFile /etc/letsencrypt /live/***/privkey.pem
TLSVerifyClient off
TLSRequired on