Especially in Microsoft-embossed environments it might be needed to send and receiver mails over Exchange. Some graphical mail clients like Evolution are offering support for this - of course this is not a good solution for servers without graphical user interfaces.

DavMail is a Java-based platform-independent software …

When hard drive sizes are altered the Linux kernel isn't informed about these changes automatically. Rebooting the system is a possible solution - but often no option.

Beneath the directory /sys/class/scsi_disk you will find additional files controlling some of the device's function depending on the SCSI id. Using the …

GitHub is a very comfortable portal to collaborate source coces. The service manages versions using Git - for documentation purposes bugs and wiki contents can be provided. Especially the open-source scene uses the service a lot but for internal, non-public developments it is only partially suitable.

Premium users are …

Hint from january 2015: the bug has been fixed in the meantime.

I found out that it is currently (11/01/2014) impossible to run osad (Open Source Architecture Daemon) with SELinux enabled on EL6.6 and EL7 systems. The following error message can be seen while starting the service:

 1# service osad restart
 2Shutting …

Attentive readers of my blog or Twitter feed might have seen that I'm also spending my time on OS X relevant topics for two months. The reason for this is that I switched the operating system of my notebook from Microsoft Windows to Mac OS X.

Why?

To be honest there was no crucial reason for switching. Since my …

Last week the european VMworld event was taking place in Gran Via, Barcelona. The program of the 4-day conference was characterised by virtualization and especially VMware products. VMware hosts two events every year - in the USA and Europe.

I had the honour to join this event as press member which gave me the …

When running a virtualized vCenter server it is very important to have a working backup. If the vCenter server crashes the virtual landscape cannot be managed or monitored.

Configuring backup is very easy when running VMware vCenter Server on a conventional Microsoft Windows servers because it is a fully-features …

Yesterday Red Hat released another update of its Red Hat Enterprise Linux major release 6: 6.6. Like for the minor updates before many optimizations and some "technical previews" were implemented.

The changes have been documented well in the release and technical notes:

• Release notes: …