SysAdmin

A quick Postfix Command Reference

There are a variety of Hypervisors out in the in the hosting space. Here is a list of the current classifications.

Xen is an open-source type-1 or bare metal hypervisor, which makes it possible to run many instances of an operating system or entirely different operating systems in parallel on a single machine (or host).

Ever wonder why the output of free -m seems to make it look like your system is out of memory?

A set of useful commands for administrators working with Exim 4.

With over 6,000 servers in the SoftLayer DataCenter (Formely “The Planet”) its no surprise to find ‘Snappy’, HostGator’s Mascot on the prowl.