Zimbra Forums

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...

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...

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...