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How to renew the SSL certificate for dovecot on CentOS

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…

How to enable port 465 (smtps) in postfix mailserver

More and more internet access providers are closing port 25 to reduce spam except for connections to their own mail…

Change PostgreSQL Locale

wrote by Rafael Marangoni, from Suporte Linux team. This article explains how to change the default PostgreSQL Locale. Be careful,…

How can an email user in ISPConfig 3 change his password?

There are three ways that an ISPConfig email user can use to change his email password (when he has no…

Configure PostgreSQL to accept connections from network

wrote by Rafael Marangoni, from Consultoria Linux team. By default, on some distros, PostgreSQL will only accept connections from localhost.…

How to save Gmail email (or thread) locally as PDF file

Gmail is undoubtedly one of the most popular web-based email services today. One of the key factors that make Gmail…

Manage the Postfix mail queue with postsuper, postqueue and mailq commands

Postfix provides several shell programs to manage the mail queue. These are: postsuper postqueue mailq In this tutorial, I will…

Get a list of all virtual hosts which are defined in all apache configuration files

Have you ever looked in the apache config files to see where a website's virtual host is defined? The apache2ctl…

Enable SSL for the ISPConfig 3 Controlpanel Login

Hint: The procedure that is described below is for ISPConfig versions < 3.0.3. For newer ispconfig versions, use the builtin ssl…

Reduce CPU and Disk load of backup scripts with nice and ionice

Running a nightly backup script on a server system, such as a web hosting server, can result in a heavy…

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