Release Notes CGS 7.0.30

Collax Groupware Suite

Installation Notes

Update Instructions

To install this update please follow the following steps:


  1. It is highly recommended to backup of all server data with the Collax backup system before proceeding. Check that the backup was successful before proceeding with the update (this can be done within the backup information email).
  2. In the administration interface go to System → System Operation → Software → System Update and press Get Package List. This will download the listed update packages. If successful the message Done! will be displayed on the screen.
  3. Click Get Packages to download the update packages.
  4. Click Install. This installs the update. The end of this process is indicated by the message Done!.
  5. A new kernel will now be installed. The system will reboot automatically after installing the update. An appropriate note will be shown if the update process is completed.

New in this Version

Collax Let’s Encrypt: New Add-on module - Let’s Encrypt

With this version, the new add-on module “Collax Let’s Encrypt” is available. Let’s Encrypt is a certification authority offering free X.509 certificates for SSL encryption.

The usual manual processes are simplified by an automated process. The CA of the Let’s Encrypt certificates is a preinstalled, trusted root certification authority of all common web browsers. Thus, browsers do not report a warning or an error encrypting web pages with a Let’s Encrypt certificate. Let’s-Encrypt certificates are primarily intended for the encryption of web pages. But they can also be used for other purposes.

Let’s-Encrypt certificates are valid for 90 days. They can be renewed as often as you like. The renewal process is performed automatically by the Collax Server. A certificate will be renewed 30 days before expiration. The expired certificates are automatically exchanged for the new ones.

E-Mail: Redirect MIME filtered email to email-address

Under the dialogue “Mail -> Mail Security -> Headers / MIME Filter” you can define your own rules to filter e-mail attachments. It can both be filtered on the file extension as well as being filtered to the MIME content type. So far there were several options as an action for the MIME filter. With this release the new action “Redirect” has been added. If “Redirect” is chosen, the filtered e-mail can be redirected to an individual e-mail address. Per-plus addressing, it can also be redirected directly into an IMAP folder, e.g. “+public.oeffentlicherfolder@FQDN”.

GUI: System Information

Collax servers offer extensive possibilities to analyze the entire system. For this purpose, a lot of information is provided: in the left menu area is a section about system information and system usage of the product. With scaled view of the web browser, especially at high monitor resolutions, this could lead to not all sections beeing displayed. This will be adjusted with this update, so that the menu boxes can be displayed even at high zoom rates.

System Management: Linux Kernel 4.9.112

This update installs Linux kernel 4.9.112.


System Management: Proper status emails

With this update, notifications will be sent to the e-mail address of the system owner adapted for the service fcron. The package is responsible for timed, recurrent processes, such as the update status of virus scanners. On the one hand, the status is displayed in the subject line and a distinction is made whether it succeeds or was faulty. Second, the description within the subject becomes more understandable formulated (human readable) and it is directly apparent from which server the status mails are sent.

Issues Fixed in this Version

Kopano Groupware: Orphaned resources

With the help of resources it is very easy to manage and check whether meeting rooms, projectors or other facilities and items for appointments are available. Due to an error in the program code it could possibly lead to resources have been marked as orphaned. This will be corrected with this update.

E-Mail: SIEVE and Web Mail

Due to an encoding error in the cyrus IMAP service, the message subject of vacation notes became unreadable. This release fixes this behaviour.

E-Mail: Postmaster notification for oversized messages

In the SMTP Receive section, the maximum size of an e-mail can be specified. In the source code of the e-mail retrieval program fetchmail, errors have been corrected, because when fetching emails with oversize, no notification of the postmaster took place. With this release, this behavior is resolved. For newly received oversized emails, the postmaster becomes immediately and then every 8 hours informed, that the email could not be picked

Security: Collax Anti Spam phraselist

The Collax Anti Spam feature powered by Kaspersky ™ includes a number of new and current applications that guarantee the security of e-mail servers. To the methods Collax Anti Spam includes phrasekists that contain phrases that are considered spam or not recognized as spam (blacklist / whitelist). Due to a validation error within the input field in the graphical user interface, certain UTF8 coded phrase lists are not filtered (including umlauts). This release fixes this behavior.

GUI: Focus on input fields

Due to a behavior change within the framework for the presentation of the administration interface, input fields had to be clicked twice during the view in the firefox web browser for beeing focussed. This will be corrected with this update.

Security: ClamAV

In the source code of the virus scanner ClamAV security holes have been discovered. These holes will be closed within this software update to the version 0.100.1.

CVE-2017-16932 CVE-2018-0360 CVE-2018-0361


E-Mail: Increased required space when using IMAP and full-text index

The option “Generate full-text index” in the options of the dialog “Mail and Messaging -> Mail Storage -> IMAP and POP3” generates a full-text index of the local IMAP folders which accelerates the search within the IMAP folders and e-mails. While activated, the system could use up to 20% more space compared to the former release (also with activated index) for the service cyrus. Please check the space requirements of the service cyrus in advance. Under the dialog “Status -> System -> Statistics” the graph “filesystem/data” shows further details.

E-Mail: Collax Virus Protection powered by Kaspersky prior Version 7

Version 7 of the Collax C servers has updated the anti-virus engine and the format of the patterns. This was done to respond to new threats with the best possible protection. Patterns for versions prior to 7.0.0 will be available until December 31, 2017. From 01.01.2018 Kaspersky will not update the patterns for Collax version 5 and older. All installations using the Collax Virus Protection module should therefore, be brought up to date.

E-Mail: Release already deleted emails in IMAP mailboxes

In the dialog “Mail and Messaging -> Mail Storage -> IMAP and POP3” the IMAP server can be activated for the users to get access to their IMAP mailboxes. Due to a modified standard directive within the Cyrus IMAP mail server since the release V7, e-mails already deleted by the mail client have not been completely released from the harddisc. Since release 7.0.22, cyr_expire will free up memory for already deleted emails. Please note that already after restarting the IMAP service during the update, the process is started and proceeded after restarting the server and thus start the IMAP service.

E-Mail: Collax Avira AntiVir prior Version 7.0.24

Version 7.0.24 of the Collax C servers has updated the anti-virus engine and the format of the patterns. This was done to respond to new threats with the best possible protection. Patterns for versions prior to 7.0.24 will be available until December 31, 2018. From 01.01.2019 Avira will not update the patterns for Collax version 7.0.22 and older. All installations using the Collax Avira AntiVir module should therefore, be brought up to date.