edit: /etc/dovecot.conf
disable_plaintext_auth = no auth_mechanisms = plain login
How to configure all system on ubuntu, Debian, CentOS
disable_plaintext_auth = no auth_mechanisms = plain login
sudo apt-get install --no-install-recommends gnome-panel
2. Run command
gnome-desktop-item-edit --create-new ~/Desktop
sudo apt-get install exo-utils3. use exo-utils run commnad:exo-preferred-applications -c