Restore GRUB bootloader after Windows installation on multi-boot system

Windows operating systems have the habit of installing their own bootloader on every installation - this wouldn't be a problem, if they would recognize all present operating systems. But unfortunately, they only recognize other Windows systems. Apart from installing EasyBCD and other tools on your Windows partition to set things right, you can also just ... Read more

Enhanced e-mail SPAM protection in ISPConfig 3

The command below enables a stricter SPAM handling for postfix on ISPConfig 3 servers. In Detail: Reject sender hostnames with invalid syntax Reject sender hostnames that are no fully qualified domains (e.g. reject "server1" but allow server1.domain.tld) Reject sender domains that have no DNS records Check sender IP addresses against realtime blacklists. First make a ... Read more

How to Manually Install New Cinnamon Themes (Linux Mint/Ubuntu)

To manually install new themes for cinnamon from the page provided by Cinnamon Settings, first backup the data of the original theme by opening a terminal and entering sudo cp -R /usr/share/cinnamon/theme /usr/share/cinnamon/theme_backup Then download and unpack another theme from, save the files to some location - I will save them on my desktop. ... Read more

How to change the welcome email message text in ISPConfig 3

As of ISPConfig 3.0.4, the text of the welcome email message that is sent to new email accounts is stored in the folder /usr/local/ispconfig/server/conf/mail/. The message has this format: ------------------------------------------------------------------------ From: ISPConfig <postmaster@localhost.localdomain> Subject: Welcome to your new email account. Welcome to your new email account. Your webmaster. ------------------------------------------------------------------------ The first line starts with "From: ... Read more

Fix for OpenSuSE error: postfix/master: fatal: Servname not supported for ai_socktype

You might see the error: postfix/master[5309]: fatal: Servname not supported for ai_socktype On a OpenSuSE server when you enable smtps in postfix file. The reason for the error is that the definition of the smtps port in /etc/services is missing. Solution Edit the /etc/services file vi /etc/services and add the following lines: smtps ... Read more

How to Install New Icons and Cursors (Linux Mint)

The way to add new icons and cursors is simple yet not really obvious in Linux Mint. To add new cursors, download any from a webside that provides these (as this), and drag and drop the package file onto the theme preferences of your Control Center: To add new icons, just download and extract them ... Read more

Copy and Paste Multiple Entries (Ubuntu Linux)

To be able to copy and paste multiple entries with Control + C and Control + V there is an applet for the GNOME desktop panel called Glipper which is a clipboard manager and is available in the default Ubuntu repositories. If it does not show up in your list of applets after installation, restart ... Read more

Change Default Application to Open Files (Linux Mint)

The default application is the one you open a file with on doubleclick. In some cases installed programs automatically turn themselves into the default application for files you were happy with, which you might want to change. To do that, rightclick a file of the chosen format and choose Open With... -> Other Application or ... Read more