Zimbra Forums

Release Notes:

Please post your patching and/or upgrading results here.

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Patch Security Severity. Deployment Risk.

For customers on...

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...

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...

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...

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...

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...

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...

My system package manager pulled the Zimbra FOSS packages from the repo updates coincident with 10.1.13, which caused zmmailboxd and the web apps to...

One of the problems with ZCS FOSS Source code not being released at the same time as its NE counterpart ( as a consequence of the embargo commits )...

I have Release 10.0.8_GA_0224.RHEL8_64_20240627073153 RHEL8_64 FOSS edition.
on Rocky Linux release 8.10 (Green Obsidian)

When ever I try to send...

Hi

I am on Maldua FOSS build system and used the binary for 10.1.4
after apt dist-upgrade today mailboxd and jetty dont work anymore.

I upgraded to...

Hi

Zimbra 10 runs still ClamAV 1.0.8 (ZBUG-5100, Clam-av has critical vulnerabilities)

zimbra-clamav 1.0.8-1zimbra8.8b4.22.04 ClamAV Binaries...

hello

Can I ask someone for help ?

I am performing an upgrade from Zimbra 10.1.9 to 10.1.11 using

The build process completes successfully, but I...

Two-factor authentication adds an additional layer of security to your Zimbra login.
Thanks to a third-party authenticator such as Google...

This ActiveSync Auth extension will improve integration with Z-Push and Z-Push Zimbra Backend .

activesyncauth-adminzimlet1.png

Features:

- 2FA...