Zimbra Forums

Hi all,

after updating to ZCS 10.1.14 some HTML mails are not being rendered correctly or displayed at all. We have seen this happening with shopify...

HI, I made the mistake of updating from 10.1.11 to 10.1.13 now zmmailboxdctl is no longer starting.
I tried to switch back to a previous version of...

Release Notes:

Please post your patching and/or upgrading results here.

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Patch Security Severity. Deployment Risk.

For customers on...

Hello everyone,

I'm building Zimbra FOSS 10.1.12 on Ubuntu 20.04 following the official zm-build steps:

git clone --depth 1 --branch 10.1.0
cd...

Hi folks,

while reading through the posts here I am getting a little bit confused.

I have got Release 10.1.12.GA.4633.UBUNTU20_64 NETWORK...

Hi.

It seems repo is missing some tags. There's no 10.1.13, nor 10.1.14. I understand not all versions has a matching tag on all repo, but for...

Hi all,

I would like to know if you guys have any troubleshooting article or how-to for sync_response.xml?

I would love to learn how do I go about...

How to change the default SMTP port (25) because port 25 is blocked by Yahoo, I want to use port 465 or 587.

I am using Zimbra 8.8.15_GA_4717.FOSS...

I want to install zimbra-zimlet-set-default-client on Zimbra 10. Still, I found the error message as follows. How do I solve the problem?

apt-get...

Hi all,

on some of our Zimbra Servers we see error messages like these:

2025-07-28 00:11:58,792 WARN mailbox - error copying notifications; will...

I have installed Zimbra 10. Still, I do not find the modern/ mobile version of webmail(see attached photo> How do I enable the modern look of webmail?

ZCS FOSS 10.1.13 - Security fixes and embargoed commits

This thread will study ZCS NE 10.1.13 (released on November 06, 2025) security fixes and...

ZCS FOSS 10.1.12 - Security fixes and embargoed commits

This thread will study ZCS NE 10.1.12 (released on October 06, 2025) security fixes and...

Hi all, I created a script to assist upgrade/migrate Zimbra from any version to the latest 10.1 FOSS or NE. I have tested it with Maldua FOSS...