January 2021 Zeta Alliance Weekly Call Summaries

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rleiker
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January 2021 Zeta Alliance Weekly Call Summaries

Postby rleiker » Tue Jan 05, 2021 9:55 pm

Hello Zimbra Community,

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

January 5, 2021

Safari 14.0.2 Issues With Zimbra
Mark S. said that after updating to Safari 14.0.2, as part of the MacOS upgrade to Big Sur, he has noticed that, for mailboxes with two-factor authentication enabled, Safari sometimes fails to proceed past the Zimbra Web Client login page to the two-factor authentication page. In other cases, Safari crashes about once per week, and he has found that he cannot scroll in certain places in the Zimbra Admin Console, or there are screen painting issues. Cine commented that he has a friend, who is an Apple developer, and they have indicated that the most recent release of Safari has some known memory management issues. Apple is reportedly trying to decide if they should release a one-off patch to address these issues, or if they should wait for the next patch roll-up to be released. Noah P. said that he too has experienced some of these same issues with Safari, in that it has crashed about every other day for him since installing the Bur Sur update.

Microsoft’s One Outlook/Monarch Initiative
Randy L. shared an article ( https://www.zdnet.com/article/microsoft ... e-outlook/ ) discussing Microsoft’s plans to discontinue the standalone Mail and Calendar apps in both Windows 8.x and Windows 10, and later the Windows and Mac desktop versions of Outlook, in favor of a single version of Outlook, which they are referring to as “One Outlook” or “Monarch”. He wondered if the earlier discussed Microsoft plans to replace EWS support in Outlook for the Mac with Microsoft Sync (refer to the August 11, 2020 Zeta Alliance call summary: viewtopic.php?f=9&t=68589#p298678
) is just another part of the One Outlook initiative. Since Zimbra supports both ActiveSync and EWS for syncing email, contacts, calendars, and tasks, this could have an impact on future sync options for Zimbra users.

Upcoming Zimbra Patches And New Zimbra Connector Release
Mark S. commented that the Zimbra Partner Portal indicates that 8.8.15 Patch 18 and 9.0 Patch 11 are scheduled to come out in late January. John H. said that either the January P18 and P11 releases or the February P19 and P12 releases are anticipated to include a new version of the Zimbra Connector for Outlook (ZCO) where an additional feature will be available to minimize the size of an Outlook PST file. Outlook officially supports PST files up to 50 GB in size, but with Windows registry tweaks, it is possible to force Outlook to accept larger PST sizes, however those larger sizes are not officially supported by Microsoft. John explained that the upcoming new version of ZCO builds on a feature that was introduced back in 9.0 Patch 7 ( https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P7 ) and 8.8.15 Patch 14 ( https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P14 ) that allowed for setting Windows registry keys to limit the amount of mailbox data that Outlook synchronizes from a Zimbra server in to a PST file. The P7 and P14 releases required rebuilding a new Outlook PST file for the change to take effect. The new upcoming ZCO feature will instead enable a more user-friendly setting by allowing an arbitrary date to be set from the Zimbra tab within Outlook, so that any synchronized data in the PST file stored prior to this date is removed from the current PST file, without needing to first build a new PST file to put the change in to effect. If a mailbox user needs to access older data, such as email messages prior to the cut-off date set in the Zimbra Outlook tab, then the user will need to login to the Zimbra Web Client to access that data.

New Zextras 3.1.6 Release
Mark S. said that he noticed Zextras released version 3.1.6 (https://docs.zextras.com/zextras-suite- ... /home.html) and asked for clarification on the fix identified as issue ID BCK-403 related to S3 bucket commands from the Zimbra command line interface (CLI). Cine said there were a few commands for S3 buckets that have been moved from the Zextras Powerstore component to the Zextras Core, since those same commands are applicable to additional features in Zextras, aside from Powerstore. Mark S. also asked if Zextras version 3.1.6 is anticipated to be included in the upcoming Zimbra 8.8.15 Patch 18 and 9.0 Patch 11 releases tentatively scheduled for late January. John H. said that this Zextras version does tentatively appear to be included in the upcoming Zimbra 8.8.15 P18 and 9.0 P11 releases.


Randy Leiker
Skyway Networks, LLC


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Re: January 2021 Zeta Alliance Weekly Call Summaries

Postby rleiker » Wed Jan 13, 2021 4:29 am

Hello Zimbra Community,

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

January 12, 2021

CentOS Alternative Options For Running Zimbra
Following the recent surprise announcement by the CentOS project to switch their focus to CentOS Stream for future releases ( https://blog.centos.org/2020/12/future- ... os-stream/ ), Noah P. shared that he is looking at using AlmaLinux ( https://almalinux.org/ ) as an upgrade path from the current CentOS project releases on which to run Zimbra. AlmaLinux describes itself as a 1:1 binary compatible fork of Red Hat Enterprise Linux (RHEL) 8, built by the creators of the CloudLinux distribution. Noah asked if anyone had insights to share as to what Zimbra’s support for binary compatible replacements to RHEL/CentOS might look like for future Zimbra releases. No one on the call had an answer for Noah’s question. Randy L. commented that he has also read about another distribution in the works called Rocky Linux ( https://www.theregister.com/2020/12/10/rocky_linux/ ), that is being coordinated by one of the founders of the CentOS project, and is likewise intended to be a drop-in replacement for CentOS.

Ubuntu 20.04.1 LTS Support For Zimbra
Marc G. asked if Synacor has any updates on when a supported Zimbra version for Ubuntu 20.04.1 LTS might be released, as his company is currently deploying new servers for Zimbra and would prefer to deploy with a more recent release of Ubuntu, rather than Ubuntu 18.04 LTS, which is the latest version of Ubuntu currently supported by Zimbra. John E. said that it is anticipated that Zimbra will have official support for Ubuntu 20.04.1 LTS in the first half of 2021, and is being tracked by internal Zimbra ticket # ZCS-9496, however the status of this ticket cannot be checked from the Zimbra Support Portal. To fix this limitation, John H. created a new Zimbra request for enhancement ticket (ZRFE-595) on the call, which can now be checked from the Zimbra Support Portal, as updates on the status for Ubuntu 20.04.1 LTS support become available from Synacor.

Follow-Up: Safari 14.0.2 Issues With Zimbra
Cine asked if anyone had any updates to share on the issue reported by Mark S. In last week’s call ( viewtopic.php?f=9&t=69121#p300106 ) related to the Safari 14.0.2 issues. No one had updates to share. Marc G. said he is on MacOS 14.0.2 (Catalina) and has not seen any issues, which seems to indicate that the Safari issues are limited in scope to those running the Big Sur version of MacOS.

Upgrade Options For Zimbra 9’s Modern UI And Zimlet Compatibility
Barry D. asked if anyone had recently rolled out the Zimbra 9 Modern UI to their users lately. No one on the call had experiences to share. Marc. G. said that what is holding back an upgrade to Zimbra 9 and a roll out of the Modern UI to his customers is that he is concerned if a wide roll out will create a number of support issues as customers begin using the new UI, since development of the Modern UI has been very rapid as of late, and wondered when it will begin to settle, especially the UI’s Zimlet interface. John E. explained that Marc should consider proceeding with an upgrade to Zimbra 9, but retaining the Classic UI as the default, since both the Classic and Modern UIs can co-exist within Zimbra 9. He also said that Marc could then gradually migrate customers from the Classic to the Modern UI as their comfort and experience with it increased, avoiding a sudden change. Barry D. added that while there are some continuing changes in the Zimlet interface for the Modern UI in Zimbra 9, there have not been any big changes lately, with most changes being incremental in nature.

Mixed-Mode Upgrades From Zimbra 8.8.15 To 9.0
Marc G. asked if a mixed-mode upgrade, where some Zimbra servers in a cluster are running 8.8.15 while others are running 9.0 is still possible. John H. and John E. said that this has been done for customer upgrade engagements that Synacor has worked on, but is best avoided if possible, as it can lead to unexpected results. Cine said that Zextras internal testing of mixed-mode upgrade scenarios suggest that most things in Zimbra should work fine, but that only the Classic UI should be used, and the Modern UI avoided, until all Zimbra servers in a cluster are upgraded to 9.0.

Compatibility Of Zimlets Developed For Zimbra 8.8.x In Zimbra 9
Randy L. said that what is holding back his company’s upgrade to Zimbra 9 is that there are multiple Zimlets currently deployed that were designed for Zimbra 8.8.x and he is under the impression that these Zimlets will not operate in Zimbra 9. Barry D. and John E. explained that in fact, Zimlets developed for Zimbra 8.8.x are very likely to work just fine in Zimbra 9’s Classic UI, but they will not work in Zimbra 9’s Modern UI, since it uses a new framework for Zimlets.

Updating The Classic UI Theme And Transitioning To the Modern UI
Mrac. G. asked if the new Zextras theme for the Classic UI ( https://www.zextras.com/zextras-theme-zimbra-interface/ ) can be used with Zimbra 9. Cine said it is compatible with both Zimbra 8.8.x and 9, Open Source and Network Edition. Marc G. said that he is thinking about using the new Zextras theme as a means to refresh the Classic UI as an interim step to transitioning his Zimbra customers to the Modern UI at a later date. John E. asked if there were specific features in the Modern UI that Marc was waiting on to be implemented. Barry D. said that in terms of feature parity to the Classic UI, the Modern UI is currently very close. John E. confirmed that the list of features to port to the Modern UI has dwindled considerably. Noah P. asked if he upgrades to Zimbra 9, does the Modern UI today largely represent what the Modern UI is intended to be? John E. said that it should be mostly complete. He also said that there is a group of UI features that do not directly translate from the Classic to the Modern UI, since those features have become irrelevant, as the Modern UI has changed the approach in which UI features are implemented. He encouraged customers and partners to express their desired features for the Modern UI to Synacor to ensure they are implemented as soon as possible. Noah P. said that a known limitation exists in the Zimbra 8.8.15 Classic UI, that prevents the password recovery/reset feature in Zimbra from being used when two-factor authentication is enabled for a mailbox. He asked if this limitation will be resolved in the Zimbra 9 Modern UI. John E. said he was not aware of this, but would check in to it and report back later.

Calendar Invite Issue For Requests Sent From Microsoft Teams
Marc G. said that a colleague using Office 365 is sending him calendar invites via Microsoft Teams, but upon receipt, the invite appears in the Zimbra Web Client (ZWC) as an unknown attachment. When examined using an external text viewing app, he said that the invite appears at first glance to have the expected iCalendar formatting and content. He also said that if he downloads the email containing the calendar invite in to an IMAP client on his desktop computer, that the invite then appears correctly as the expected ics file. John E. asked if perhaps the sender was sending Marc G. a TNEF encoded file ( https://en.wikipedia.org/wiki/Transport ... ion_Format ), and if so, the ZWC has a built-in utility that attempts to auto convert TNEF files in to a usable format for non-Microsoft email apps, however this conversion only occurs within the ZWC, and not for email downloaded by outside email client apps. Marc said he did not see any indications that the calendar invite was TNEF encoded, so John E. and John H. suggested that Marc should open a Zimbra support case and include a complete unaltered copy of the calendar invite for Zimbra to analyze the headers and MIME type of the file. Cine also asked if Marc experiences this issue for one-time appointments, or recurring appointments only. Marc G. said that it has been happening with recurring appointments, and to troubleshoot, he has had the calendar event organizer delete and re-create a new recurring event, but that has not helped resolve the issue.


Randy Leiker
Skyway Networks, LLC

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