Wikipedia

Zimbra

Zimbra Collaboration,formerly known as theZimbra Collaboration Suite(ZCS) before 2019, is acollaborative softwaresuite that includes anemail serverand a web client.

Zimbra Collaboration
Developer(s)Synacor
Initial releaseJuly 26, 2005;19 years ago(2005-07-26)
Stable release
10.1.5[1]Edit this on Wikidata / 24 January 2025
Repository
PlatformLinux
TypeCollaborative software
LicenseZimbra licensing
Websitewww.zimbra.com

Zimbra was initially developed by LiquidSys, which changed their name to Zimbra, Inc. on 26 July 2005.[2]The Zimbra Collaboration Suite was first released in 2005. The company was subsequently purchased byYahoo!on September 17, 2007,[3]and later sold toVMwareon January 12, 2010.[4]In July 2013, it was sold by VMware toTelligent Systems[5]which changed its name to Zimbra, Inc. in September 2013.[6]It was then acquired bySynacoron 18 August 2015.[7]

According to former Zimbra President and CTO Scott Dietzen, the name for Zimbra is derived from the song "I Zimbra"byTalking Heads.[8]

Edition

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The software consists of bothclientandservercomponents, and at one time also offered a desktop email client, called Zimbra Desktop. Two versions of Zimbra are available: anopen-sourceversion, and a commercially supported version ( "Network Edition" ) withclosed-sourcecomponents such as a proprietaryMessaging Application Programming Interfaceconnector to Outlook for calendar and contact synchronization.[9]

The now discontinued Zimbra Desktop was a full-featured free desktopemail client.[10]Development was discontinued under VMware's stewardship in 2013 but was restarted in February 2014, but was ended again by 2019. The web client featured an HTML5 offline mode starting with version 8.5.[11]

The Zimbra Web Client is a full-featured collaboration suite that supports email and group calendars. At one time it featured document-sharing using anAjaxweb interface that enabled tool tips, drag-and-drop items, and right-click menus in the UI. Today it has document sharing, chat, and videoconferencing. Also included are advanced searching capabilities and date relations, online document authoring, "Zimlet"mashups,and a full administration UI. It is written using theZimbra Ajax Toolkit.[12]

The Zimbra Server uses several open source projects (see the section,Included open source projects). It exposes aSOAPapplication programming interfaceto all its functionality and is also anIMAPandPOP3server. The server runs on manyLinux distributions.[13]On other, non-Linux operating systems it can be run using avirtual machineand using container technology. It supports CalDAV, CardDAV and SMTP for messaging, LDAP for directory services, and Microsoft Active Directory (AD). Zimbra uses Postfix for its MTA functionality. It includes technology from ClamAV, SpamAssassin and DSPAM for anti-malware features and S/MIME for email signing and encryption.OS X Serversupport was dropped with version ZCS 7.0.

Zimbra can synchronize mail, contacts, and calendar items with open-source mail clients such asMozilla ThunderbirdandEvolutionand also with proprietary clients such asMicrosoft OutlookandApple Mail,either through proprietary connectors or using theActiveSyncprotocol,[14]both available exclusively in the commercially supported version. Zimbra also provides native two-way sync to many mobile devices.[9]

2024 Cyber Attack

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In 2024, Zimbra was hit by a significant cyber attack[15]due to a Remote Code Execution (RCE) vulnerability, labeled CVE-2024-45519. The flaw in Zimbra’s postjournal service allowed attackers to send specially crafted emails, enabling remote command execution on affected systems. While the postjournal service isn’t active by default, its use in many setups made Zimbra an attractive target, especially since some instances lacked up-to-date security patches. To mitigate these risks, Zimbra released patches for affected versions, including updates to 9.0.0, 10.0.9, and others.

Software license

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The closed source variant Network edition is distributed under the Zimbra Network Edition EULA.

Starting with version 8.5 the Zimbra source code is available under the terms of theGNU General Public Licenseversion 2 (backend) and theCommon Public Attribution Licenseversion 1 (frontend).[16]

Previous versions were released under the Zimbra Public License (ZPL). TheFree Software Foundationaccepts the license as being afree software licenseand refers to it as being identical to theYahoo! Public Licensewith the exception that Zimbra, Inc. provides the license, rather than Yahoo!.[17]

Included open source projects

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The Zimbra Server uses open source projects such as:[18]

It previously used:

  • MySQL(last used in version 8.0)
  • Apache Tomcat(last used in version 4.5)
  • Perdition mail retrieval proxy (until 4.5)

See also

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References

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  1. ^"Release 10.1.5".24 January 2025.Retrieved29 January2025.
  2. ^"Patent US20090100073 - System and method for enabling an external-system view of email attachments".google.je.Retrieved22 February2016.
  3. ^"Yahoo! Inc. - Company Timeline".Wayback Machine.13 July 2008. Archived from the original on 13 July 2008.Retrieved13 February2017.{{cite web}}:CS1 maint: bot: original URL status unknown (link)
  4. ^Vance, Ashlee(13 January 2010)."VMware Gently Nudges Microsoft with a Zimbra".New York Times Bits Blog.Retrieved30 May2010.
  5. ^Henry, Tiffany (15 July 2013)."Telligent Acquires Zimbra from VMware".Telligent.Retrieved15 July2013.
  6. ^Henry, Tiffany (25 September 2013)."Zimbra Unveils Integrated Team, Culture and Vision for People-Centered Collaboration at User Group Conference".Telligent.Retrieved15 December2013.
  7. ^"Synacor Agrees to Acquire Zimbra, a Leading Provider of Open Source Based Email and Messaging Software"(Press release). Global News Wire. 18 August 2015.Retrieved18 August2015.
  8. ^Dietzen, Scott (12 September 2005)."So what's a Zimbra?".Zimbra Blog.Retrieved17 January2013.
  9. ^ab"Zimbra Compatibility with Other Desktop Clients".VMware Zimbra Official Web Site.VMware Zimbra. Archived fromthe originalon 28 December 2013.Retrieved8 January2013.
  10. ^"Zimbra Desktop".VMware Zimbra Official Web Site.VMware Zimbra. Archived fromthe originalon 20 October 2010.Retrieved8 January2013.
  11. ^"Zimbra Collaboration 8.5: Anytime, Anywhere, Any Device".Zimbra Blog.Zimbra. 26 August 2014.Retrieved5 March2015.
  12. ^"Zimbra Documentation for the Zimbra Web Client".VMware Zimbra Official Web Site.VMware Zimbra. Archived fromthe originalon 8 September 2015.Retrieved8 January2013.
  13. ^"Zimbra Open Source".Zimbra Official Web Site.Zimbra. Archived fromthe originalon 12 November 2020.Retrieved8 January2013.
  14. ^"Exchange ActiveSync(EAS) Outlook 2013".Zimbra Official Wiki.Zimbra.Retrieved5 March2015.
  15. ^tailored (7 October 2024)."Zimbra: A Case in Cybersecurity".Empreus IT.Retrieved30 October2024.
  16. ^"OSI Licenses for Zimbra Collaboration Open Source Edition".Jon Dybik. 4 June 2014.Retrieved5 June2014.
  17. ^"Various Licenses and Comments about Them".Free Software Foundation.Retrieved8 July2011.
  18. ^"Zimbra Components".Retrieved16 July2014.
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