Increase Web Client Performance with Memcache

Memcache is a protocol to access a simple key-value store, that is memory-backed, over a network socket. The memcached server does not perform any form of access control and is optimal for certain caches used in the Kolab web client (and associated HTTP-based access interfaces), by avoiding superfluous login, access control, and other such software […]

Update: iRony 0.4.2-3

We’re pleased to announce an update for the iRony packages, version 0.4.2-3. This update is a bugfix release for Kolab 16, available on Debian 8, Debian 9, Ubuntu 16.04 and Ubuntu 18.04, and for Plesk Premium Email version 16 available on Debian 8, Debian 9, Ubuntu 16.04 and Ubuntu 18.04. The following issues are fixed; […]

Upgrading from Kolab 3.4 to Kolab 16

The purpose of this guide is, to describe the procedure of upgrading a Kolab Goupware installation from a default installed Kolab 3.4 (last “community version”) to Kolab 16. The guide is not taking into consideration any customized configuration. neither is it considering installations of Kolab 3.4 on CentOS 6, which is not supported for Kolab […]

Redundant Firewalls with High-Availability & Load-Balancing

This article is a guide to setting up redundant firewalls using Red Hat Enterprise Linux 7, that services high-availability and load-balancing requirements for the firewalls themselves as well as the services in networks behind it. The base architecture of the network consists of at least 1 subnet on the outside of the firewalls, facing the […]

Configuring Kolab with setup-kolab

After having installed kolab (following the appropriate install guide in this knowledge base) it needs to be configured. The script ‘setup-kolab’ is distributed with the out-of-the-box installation and is taking care of the basic configuration, but a successful configuration is depending on the environment that Kolab is installed into. Many aspects and variables will have […]