it was always the proftpd-core config problem the following solved it for me:
sudo apt remove proftpd* sudp apt purge proftpd* sudo apt-get install proftpd*
sudo service proftpd start
proftpd.service - ProFTPD FTP Server Loaded: loaded (/lib/systemd/system/proftpd.service; enabled; vendor preset: enabled) Active: active (running) since Mon 2021-07-19 12:53:36 +07; 9min ago Main PID: 12406 (proftpd) Tasks: 1 (limit: 4632) Memory: 4.1M
it was always the proftpd-core config problem
the following solved it for me:
sudo apt remove proftpd*
sudp apt purge proftpd*
sudo apt-get install proftpd*
sudo service proftpd start
proftpd.service - ProFTPD FTP Server system/ proftpd. service; enabled; vendor preset: enabled)
Loaded: loaded (/lib/systemd/
Active: active (running) since Mon 2021-07-19 12:53:36 +07; 9min ago
Main PID: 12406 (proftpd)
Tasks: 1 (limit: 4632)
Memory: 4.1M