Vesta control panel (VestaCP) is an open source hosting control panel, which can be used to manage multiple websites, creat and manage email accounts, FTP accounts, and MySQL databases, manage DNS records and more.
VestaCP is a free and open-source alternative to cPanel. After installing Vesta Control Panel on your Linux server, point your domain name or subdomain to your server's Name Server records.
VestaCP is open source hosting control panel that provides many features to manage domains, DNS, mail, databases, cron jobs, backups and much more. On Linux systems, a control panel is a graphical user interface (GUI) that displays a simplified set of controls for your system. Control panels are capable of installing, configuring, and updating common software packages and performing Linux system administration tasks.
Change the password as follows:
1. Open: /var/lib/roundcube/config/db.inc.php and then look for the password in the command
$rcmail_config['db_dsnw'] = 'mysql://roundcube:password@localhost/roundcube';
2. Copy the password only.
3. Now open: /etc/roundcube/debian-db.php
5. Replace "wrong_password" with the correct password that you just copied.