ClearOS Professional 6.4.0 Final Release Notes

Released: April 11, 2013

ClearOS Professional 6.4.0 has arrived! Along with the usual round of bug fixes and enhancements, this release introduces a new reports engine, a storage manager, an antimalware file scanner, a basic POP/IMAP server, RADIUS, and mail retrieval (fetchmail).

What's New in ClearOS Professional 6.4.0

The following is a list of new features in ClearOS Professional 6.4.0.

There have also been a couple of apps already released since ClearOS 6.3.0:


Please see the Downloads page for download information.

Upgrade from ClearOS Professional 6.3.0 and Earlier

ClearOS follows the same release pattern as upstream. There is really only a single “ClearOS 6” version - the minor releases are just snapshots in time with bug fixes, enhancements, etc. If your system has automatic updates enabled, your ClearOS system will have transitioned to ClearOS 6.4.0. For those with automatic updates disabled, upgrading is as simple as running:

yum upgrade

ClearOS 5.2 Differences

For ClearOS 6, the barrier for having an app available in the web interface was raised. If the quality or features in ClearOS 5.2 were not up to the standards of a modern small business server/gateway, the feature was either upgraded or deprecated.

Zarafa for ClearOS

The default groupware and mail solution is now based on Zarafa technology.


Horde/Kolab has been deprecated and is no longer supported. This policy may change in a future ClearOS 6 release.

Advanced Firewall

The Advanced Firewall app was marked as deprecated in version 5.2. It is no longer available. The Custom Firewall can be used as an alternative.


The Administrators app does not fit into the group-based policy engine in ClearOS 6. The underlying mechanism that existed in ClearOS 5 has been ported to version 6, but it requires command line configuration.


The Dynamic VPN app provides advanced IPsec support in ClearOS Professional. The unmanaged IPsec tool has been replaced by the 3rd party Static IPsec VPN app. The new app is much more powerful than what was provided in ClearOS 5.x!

Mail Archive

The Mail Archive module in 5.x has not been converted over to the new 6.x framework. This app will be re-introduced into the ClearOS Marketplace in the future. The Zarafa Professional Edition (ClearOS Professional Edition required) has Mail Archiving included for up to 20 users. For additional mail archive 'seats', please contact Zarafa sales.


content/en_us/announcements_releases_clearos_professional_6.4.0_release_notes.txt · Last modified: 2015/02/10 17:46 (external edit)