You might see the error: postfix/master[5309]: fatal: 0.0.0.0:smtps: Servname not supported for ai_socktype On a OpenSuSE server when you enable smtps in postfix master.cf 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
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
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
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
After crashing your system and getting entertaining colored screens on boot, you may have to consider booting in live mode from a bootable device such as an installation DVD or a USB-device. However you'll need to be able to log in as root in most cases to make changes in configuration files and others to ... Read more
To block web pages on Linux Mint, there is a simple tool in your Control Center. Go to Menu > Control Center > System > Domain Blocker and you will be asked for your password. A plain window with just a few buttons will appear afterwards. To add web pages to the blocking list, click ... Read more
wrote by Rafael Marangoni, from Servidor Linux team. This article explains howto update the Samba packages on CentOS 5 to version 3.5. First, we need to add a new repository: cd /etc/yum.repos.d/ wget http://ftp.sernet.de/pub/samba/3.5/centos/5/sernet-samba.repo Then, update samba: yum update samba Probably, you will need winbind too: yum install samba3-winbind samba3-utils Check the rpm version: rpm ... Read more
To create new SSL certificates for the dovecot pop3 and imap server on Ubuntu, follow these steps: Make a backup copy of the old key and certificate file sudo cp /etc/ssl/private/dovecot.key /etc/ssl/private/dovecot.key.old sudo cp /etc/ssl/certs/dovecot.pem /etc/ssl/certs/dovecot.pem.old Create the new key file openssl genrsa -out /etc/ssl/private/dovecot.key 1024 Create the new certificate file, valid for 2 years ... Read more
If you use a mailserver wil very low ram (< 500 MB) and a slow CPU then it might be nescessary to disable the spam- and antivirus filter functions in ISPConfig 3 as amavisd and clamav might be too heavy for your server hardware. The steps to disable clamav and amavisd are: Edit postfix main.cf ... Read more
As of today, all ClamAV 0.94 or older installs will stop working. The Debian project has not released updates for their current stable release (5.0) yet to solve this, but there is a workaround. The Debain volatile project provides newer clamav versions. The installation steps to install ClamAV 0.95.3 on Debian lenny are: 1) Add ... Read more