Something

cat /etc/dovecot/dovecot.conf
protocols = imaps
verbose_ssl = yes

mail_location = maildir:/home/vmail/%d/%n
mail_extra_groups = mail

protocol imap {
}
 
protocol pop3 {
}
    
protocol lda {
    log_path = /var/vmail/dovecot-deliver.log
    auth_socket_path = /var/run/dovecot/auth-master
    postmaster_address = administrator@lavendel.tk
    mail_plugins = cmusieve
    global_script_path = /var/vmail/globalsieverc
}

auth default {
    mechanisms = plain login
    passdb pam {
    }
    passdb sql {
      args = /etc/dovecot/dovecot-sql.conf
    }
    userdb passwd {
    }
    userdb static {
    args = uid=5000 gid=5000 home=/home/vmail/%d/%n allow_all_users=yes
    }
  
    user = root
  
    socket listen {
      client {
          path = /var/spool/postfix/private/auth
          mode = 0660
          user = postfix
          group = postfix
      }
    }
}

dict {
}

plugin {
}