Zimbra Forums

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...

I am pretty late to the party and am planning to migrate from CentOS 7 with Zimbra 9 to RHEL9 Zimbra 10.1.
My approach is to upgrade CentOS 7 to...

Hi,
syslog receives thousands of slapd CSN messages:

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

Hi,
We run Zimbra 8 Network edition for our company email. I have been playing around with this new IM, Skype-type messaging solution from Microsoft...

Hi, all

I am still using 10.1.10 and I saw 10.1.1.15 marked as released in
Zimbra FOSS release page. But there is no 10.1.1.15 tag in
zmbuild...

Hi there, I have created zm-docker as alternative way to run Zimbra. This save the hassle of configuring OS, software dependencies, install,...

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...

According to ZCS 10.0.18 release notes ZCS 10.0.18 should include a fix for CVE-2025-68645 ( Addressed an unauthenticated local file inclusion...

We are observing a serious inconsistency in how Zimbra enforces the authenticated sender depending on the mail client.

When a Zimbra mailbox is...

Just in case people missed it:

I'm not sure if the particular subsystem is part of a normal TLS hand port, but better safe than sorry.

Better...

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...