Proper installation Dovecot mail server
apt remove dovecot-core
dpkg -P dovecot-core
sudo apt install dovecot-imapd dovecot-pop3d
Reference https://help.ubuntu.com/lts/serverguide/dovecot-server.html
Proper installation Dovecot mail server
apt remove dovecot-core
dpkg -P dovecot-core
sudo apt install dovecot-imapd dovecot-pop3d
Reference https://help.ubuntu.com/lts/serverguide/dovecot-server.html