Zimbra Forums

I have a co-worker who is trying to join this forum, but is having a weird issue. She registers and gets the confirmation email, but when she clicks...

Hi all,

Zimbra has DoSFilter, see

There are still many password bruteforce attacks going on in 587, some in the gaps of seconds. It is as if the...

Hi,
syslog receives thousands of slapd CSN messages:

Feb 9 06:59:51 zimbra slapd : slap_graduate_commit_csn: removing 0x7fd4c01cfb20...

I did a few test installs on a staging machine. For whatever reason, Synacor has listed systemd-resolved as a dependency in zimbra-os-requirements...

ZCS FOSS 10.1.16 - Security fixes and embargoed commits

This thread will study ZCS NE 10.1.16 (released on February 04, 2026) security fixes and...

Hello

We want to perform tasks such as mailbox backup with Zimbra preauth without requiring a password. However, we are receiving the following...

Hi everyone, I just upgraded my Zimbra Collaboration Suite on a single server. I am using Ubuntu Server with approximately 50 mailboxes, as well as...

Hi Administrators, BUGZILLA for Daffodil seems to be actually dead, I don't know if this is the right place to report this bug, but there's no other...

While checking the ZCS 10.1.13 update on the Zimbra's antisamy repo I have noticed that Zimbra's antisamy has an additional lib directory with jar...

It seems that there's a list of sites running ZCS (presumably by scanning for signatures) that I'm on, and I've been seeing huge volumes of phishing...

I've been trying to use the Modern UI more often, and I and my customers are heavy users of the Email Templates zimlets.

Recently, I discovered that...

According to Adrian Gibanel on today's Zeta Alliance call, Zimbra are about to release a Hotfix to introduce two new Global Config attributes:...

Hi! With the loss of the NG modules in ZCS v10+, is it possible to somewhat replicate the zxsuite abq mechanism? I'd like to be able to have new...

Greetings, all. I've been hosting a few personal domains on Ubuntu/Zimbra FOSS for well over a decade and have been frankly a little scared to get...

zimbra-foss-builder has been split between zimbra-foss-builder and zimbra-foss repos.

- Zimbra FOSS Builder (from Maldua) let's you build Zimbra...

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

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...

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

activesyncauth-adminzimlet1.png

Features:

- 2FA...

Hi all,
I am creating a zimlet and in that i am using dialog from import { ModalDialog } from '@zimbra-client/components';
In modal dialog by...

I am wondering how to make Zimbra Mailboxd to connect to Zimbra MTA using TLS (465). Currently this zimbraSmtpHostname is set to localhost:25, if it...

Hello!

I just upgraded from 9 to 10.1 directly on the server, I would now like to migrate Zimbra to another server under Rocky 8.10.

I have rsync...

Hi everyone,

I’m using a service account in delegated mode to access users’ calendars, but I can only see Free/Busy information — the event details...

Try this:

Hi all

A client server has started getting this error message below. It has been working fine, it just started yesterday.

(delivery temporarily...