[Users] December 8, 2020 Zeta Alliance Conference Call Summary

[Randy Leiker]

Hello Zeta Alliance Community, 

Here is a summary of this week’s conference call. A few brief reminders: 


    * Conference calls are every Tuesday and open to all using either the FreeConferenceCall.com VoIP app or via a dial-in number: [ https://www.freeconferencecall.com/wall/zetalliance | https://www.freeconferencecall.com/wall/zetalliance ] 
    * Each week’s call agenda can be found at: [ https://docs.google.com/document/d/1uUUDJpwp2CAylU6lxtbEdVcUX_qSbciyes6gLTWw2fY/edit | https://docs.google.com/document/d/1uUUDJpwp2CAylU6lxtbEdVcUX_qSbciyes6gLTWw2fY/edit ] 
    * A copy of each week’s summary is also posted to the Zimbra Forums: 
        * All Prior Months: [ https://forums.zimbra.org/viewforum.php?f=9 | https://forums.zimbra.org/viewforum.php?f=9 ] 
        * November 2020 : [ https://forums.zimbra.org/viewtopic.php?f=9&t=68942 | https://forums.zimbra.org/viewtopic.php?f=9&t=68942 ] 
        * December 2020 : [ https://forums.zimbra.org/viewtopic.php?f=9&t=69008 | https://forums.zimbra.org/viewtopic.php?f=9&t=69008 ] 
    * Constructive feedback on these call summaries is always welcome. 

December 8, 2020 

Occasional Error Upon Logging In To The Zimbra Web Client 
Noah P. said he has noticed an occasional error in 8.8.15 that appears when logging in to the Zimbra Web Client (ZWC) Classic UI that says “an unknown error has occurred”. However, upon trying the same login again, the login succeeds. Matthew F. said he has observed this same issue too and that he found that by adding “/zimbra” to the end of the ZWC’s URL before initially logging in, it appears to avoid the error message and allows the first login attempt to succeed. John E. commented that it could be originating from a back-end component in Zimbra, possibly from the interaction between a proxy with a mailbox server, or a Zimbra API (application programming interface) call. Matthew F. suggested it might be mitigated simply by updating bookmarks or links to the ZWC to include the “/zimbra” part of the URL (e.g. zwc-host.com/zimbra). 

CentOS Project Change 
Noah P. shared this blog post ( [ https://blog.centos.org/2020/12/future-is-centos-stream/ | https://blog.centos.org/2020/12/future-is-centos-stream/ ] ) related to the CentOS project’s plans to phase-out CentOS Linux 8 and migrate to CentOS Stream 8. He wondered how this will affect Zimbra installs for CentOS 8. Randy L. commented that he was surprised by this news too, as it is his understanding that CentOS Linux 8 is considered to be a stable production-use distribution, based on Red Hat Enterprise, while Stream 8 has been previously positioned as more of a bleeding-edge distribution, similar to Fedora Core. 

New Zimlet Development Guides Released 
Barry D. said that he has released two new Zimlet guides. The first ( [ https://github.com/Zimbra/zimbra-zimlet-signature-template | https://github.com/Zimbra/zimbra-zimlet-signature-template ] ) is a guide discussing how to create a Zimlet for deploying consistent email signatures within an organization. The second guide ( [ https://github.com/Zimbra/zimbra-zimlet-user-properties | https://github.com/Zimbra/zimbra-zimlet-user-properties ] ) discusses how to use per-user preferences/settings within a Zimlet. 

Excessive Online/Offline Notifications In The Zimbra Web Client 
Randy L. said that after installing 8.8.15 Patch 16, he has noticed that when using the Zimbra Web Client (ZWC) with the latest Firefox version, he sees repeated “You are offline” and “You are online” notifications anytime an email attachment is opened, in addition to when signing off of the ZWC. These repetitive notifications do not appear to block any functionality in the ZWC from working, but are just a nuisance. He said he has not yet tested if this occurs in other browsers such as Chrome, Edge, or Safari. Barry suggested these might be related to the Zimbra DoS filter, leading to a 503 error in the background, but Randy said he did not think this was the case, as he has not yet seen any 503 errors logged, nor functionality in the ZWC blocked by the DoS filter. John E. suggested that if Randy has Zimbra Connect enabled, the notifications may be originating from the Zimbra Connect Chat feature, and suggested checking the browser console for any warnings/errors that are being logged by Firefox. Randy said he will gather more information and open a bug report with Zimbra. 

Join.Me Add-In for Outlook and the Zimbra Connector Incompatibility 
Noah P. said he has discovered an incompatibility between the Join.Me add-in for Outlook and the Zimbra Connector for Outlook 9.0. He said a workaround for the issue is to either uninstall the Join.Me add-in or uninstall the Zimbra Connector. In the case of the latter, Outlook can be configured to use ActiveSync instead of the Zimbra Connector. He has opened Zimbra Support case # 01110188 with a report of the issue. 

Custom VBScript Incompatibility With Zimbra Connector 9.0.0.1886 
Matthew F. said that he noticed his custom VBScript for Outlook has stopped working when Zimbra Connector for Outlook 9.0.0.1886 is installed. He said the incompatibility seems to occur when the script makes a function call to create a new email message, resulting in an error message that appears and the function call fails. He found that by rolling back to Zimbra Connector 9.0.0.1869, his custom VBScript again works as expected. He wondered if this is related to the incompatibility issue that Noah reported with the Join.Me add-in for Outlook. Matthew has opened Zimbra Support case # 01082979 with a report of the issue. 

Zimbra Connect Call Displaying Grey Screen 
Marc G. asked if anyone had seen problems with missing video or a grey screen being displayed when starting a Zimbra Connect (Instant Meeting) call. Randy L. said that this likely indicates that a TURN server needs to be setup, as Connect may be having trouble creating a peer-to-peer connection between the call participants. He suggested referring to a how-to article ( [ https://forums.zimbra.org/viewtopic.php?f=45&t=67960 | https://forums.zimbra.org/viewtopic.php?f=45&t=67960 ] ) on setting up a TURN server with the popular reTURN package. 


Randy Leiker ( randy at skywaynetworks.com ) 
Skyway Networks, LLC 

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