It is the universitys computing centre and a computing and IT competence centre for the Max Planck Society. More. Current Traffic. How To Install Kolab On Centos Linux' title='How To Install Kolab On Centos Linux' />Mirrored Projects. Below you will find a list of all mirrored sites. Items in grey are not synchronized at the moment, as there is either a temporary problem with the upstream or the original project is deprecated. Such items will remain as archives. Free, Open Source Mail Server Solution. Having search for a solution to replace an Exchange AD system with an Open. Source solution for a while. Did look at Kerio, Zentyal, Kolab, Kopano, Zimbra and Sogo from their respective freeopen version, and also made a deep investigation into the available documentations and forum contents. So far the i. Redmail packaging is the far best Ive seen, and answers to almost every questions I come across can be found in the existing i. Red. Mail documentation or on the forum site. Since all modules are standard open source projects, its easy to find more information for specific issues, like Open. Ldap or Postfix elsewhere. Once I tried the installation and got it up and running in an hour or so, I didnt bother to check the other test systems again. We have now started a project to migrate our Exchange server, and to use Open. LDAP instead of Active directory for our application servers Gitlab, Confluence, Jira, etc. Thanks for a really good product.