When working with your computer, you have probably come across files in .zip or .rar format. These are so-called packed or compressed files. Their function is to store multiple files and/or folders in a single file and compress them so that they are easier to send and waste less space. Windows has a built-in function ... Read more
Resetting your system's root password may be a necessary step if you have forgotten it or have bought a used computer that you don't want to set up a new one. Doing so without any installation medium saves you a blank CD and a bit of time. To start, restart your computer and get to ... Read more
Grub's default boot option is stored within a config file found on the partition where your Master Boot Record is located (if you had it installed previously, there may also be grub.cfg files on other partitions, but these won't affect boot sequence). Its direct path is /boot/grub/grub.cfg and it has to be opened as root, ... Read more
Make a backup of the old key and certificate file mv /etc/ssl/certs/dovecot.pem /etc/ssl/certs/dovecot.pem.old mv /etc/ssl/private/dovecot.key /etc/ssl/private/dovecot.key.old Create the new SSL certificate openssl genrsa -out /etc/ssl/private/dovecot.key 1024 openssl req -new -x509 -key /etc/ssl/private/dovecot.key -out /etc/ssl/certs/dovecot.pem -days 730 Restart Dovecot: service dovecot restart
Linux user quotas can be edited with the commands edquota or setquota on the shell. While edquota opens the quota settings in an editor like vim, setquota allows you to specify the quota settings on the command line. Example for disabling the quota for the user "testuser": setquota -u testuser 0 0 0 0 -a ... Read more
More and more internet access providers are closing port 25 to reduce spam except for connections to their own mail servers. If you run your own email server and have problems connecting to it on port 25, you can enable port 465 (SMTPS) in postfix as a workaround. Edit the /etc/postfix/master.cf file: nano /etc/postfix/master.cf and ... Read more
In case of configuration changes do not get written to disk in ISPConfig 3, you should enable the debugging mode. Login to ISPConfig and go to System > Server config > Server (name of the server) > Server and set Logelevl to Debug. Old Versions: If you use an ISPConfig version < 3.0.2, then debugging ... Read more
wrote by Rafael Marangoni, from Suporte Linux team. This article explains how to change the default PostgreSQL Locale. Be careful, because we're considering that you do not have data on the PostgreSQL instance. First, we need to stop the Postgres service (if was not already stopped): service postgresql stop Then we need to remove all ... Read more
There are three ways that an ISPConfig email user can use to change his email password (when he has no client login). Use the Mail user login in ISPConfig Email users can login to ISPConfig with their email address and mailbox password by using the normal ISPConfig GUI login. They will get logged into a ... Read more
wrote by Rafael Marangoni, from Consultoria Linux team. By default, on some distros, PostgreSQL will only accept connections from localhost. When you have only access from localhost (from localhost Apache, by example) everything is ok, but when you need that postgresql accepts connections for other hosts, you need to make some configs. First of all, ... Read more