If you have installed the OS from our list named "CentOS 6 x86 Webmin LAMP extended [vpsget]", here is something you should know about it.
password: your root password.
Before accessing phpMyAdmin you need to set MySQL root password. To do so, please log in to your server with ssh and use the following command:
mysqladmin -u root password <password>
password: the password you have just set in example above.
All you need to do is open the file /etc/postfix/main.cf and edit the line so that it contains your domain:
mydomain = example.com
Log in to your server with ssh and use the following commands: