Installation and Upgrade

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What should I check after upgrading Zimbra ZCS?

Last post by Martinwiertz « Wed Feb 18, 2026 7:26 pm
Replies: 1
by jamieoliver » Sat Jan 17, 2026 4:30 am

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...

1 Replies

1653 Views

Last post by Martinwiertz
Wed Feb 18, 2026 7:26 pm
ZCS upgrade from 8.6.0 to 8.8.15 failed with wrong keystore password

Last post by darkfader « Wed Feb 18, 2026 2:03 pm
Replies: 2
by joller » Fri Aug 02, 2019 9:10 am

Hi there,

I tried to upgrade ZCS open-source from 8.6.0 to 8.8.15, but some error message showed up and finally the services didn't start.
The...

2 Replies

3135 Views

Last post by darkfader
Wed Feb 18, 2026 2:03 pm
Zimbra 10.1.16 Released - Please Post Your Patch/Upgrade Results Here

Last post by yeak « Wed Feb 18, 2026 8:14 am
Replies: 34
by adrian.gibanel.btactic » Wed Feb 04, 2026 11:13 am
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Release Notes:

Please post your patching and/or upgrading results here.

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( This is a very small summary. Check the release notes above for...
34 Replies

4942 Views

Last post by yeak
Wed Feb 18, 2026 8:14 am
Question to "ActiveSync quarantine"

Last post by Nuce « Wed Feb 18, 2026 6:03 am
Replies: 2
by Nuce » Tue Feb 17, 2026 3:24 pm

Hello,

we are switching from MS Exchange to Zimbra 10.1.14.

At MS Exchange we used the ActiveSync quarantine. We disabled ActiveSync. If our users...

2 Replies

106 Views

Last post by Nuce
Wed Feb 18, 2026 6:03 am
Maldua's Zimbra FOSS Builds - 2024 Year Feedback [Archive]

Last post by darkfader « Tue Feb 17, 2026 12:04 am
Replies: 104
by adrian.gibanel.btactic » Mon Mar 18, 2024 11:48 am
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Maldua's Zimbra FOSS Builds - Forum Threads

Please choose the current year feedback thread and submit your feedback there.

- Maldua's Zimbra...
104 Replies

236251 Views

Last post by darkfader
Tue Feb 17, 2026 12:04 am
Maldua's Zimbra FOSS Builds - Share your feedback

Last post by darkfader « Mon Feb 16, 2026 11:35 pm
Replies: 34
by adrian.gibanel.btactic » Sat Jan 10, 2026 7:12 pm
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Maldua's Zimbra FOSS Builds - Share your feedback

This thread is about getting feedback from Maldua's Zimbra FOSS Builds.

- Main (Recommended)...
34 Replies

8114 Views

Last post by darkfader
Mon Feb 16, 2026 11:35 pm
Zimbra 10 FOSS Installation Guide

Last post by innotelinc « Mon Feb 16, 2026 8:29 pm
Replies: 158
by innotelinc » Tue Sep 05, 2023 6:08 pm
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****** UPDATED GUIDE RIGHT HERE *******

Hello everyone, it's been a while! Good to see many who've made progress on this script here is the updated...
158 Replies

2817403 Views

Last post by innotelinc
Mon Feb 16, 2026 8:29 pm
Maldua's Zimbra 10 FOSS Build system

Last post by liverpoolfcfan « Mon Feb 16, 2026 3:42 pm
Replies: 62
by adrian.gibanel.btactic » Wed Mar 13, 2024 12:20 pm
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2026 02 14 update .

The project now consists of three different repos depending on each other.

Please check: Maldua's Zimbra FOSS - Build ecosystem...
62 Replies

156002 Views

Last post by liverpoolfcfan
Mon Feb 16, 2026 3:42 pm
Server migration from CentOS7 to RHEL9. Same 10.1 version not available

Last post by BradC « Tue Feb 10, 2026 1:36 pm
Replies: 8
by sb0373 » Sat Feb 07, 2026 9:45 am

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...

8 Replies

1280 Views

Last post by BradC
Tue Feb 10, 2026 1:36 pm
about FOSS 10.1.15 release?

Last post by Vincent Chen « Mon Feb 09, 2026 5:04 am
Replies: 2
by Vincent Chen » Thu Feb 05, 2026 1:36 am

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...

2 Replies

1089 Views

Last post by Vincent Chen
Mon Feb 09, 2026 5:04 am
Run Zimbra using zm-docker

Last post by adrian.gibanel.btactic « Fri Feb 06, 2026 8:25 am
Replies: 9
by yeak » Mon Feb 02, 2026 3:54 pm

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

9 Replies

1420 Views

Last post by adrian.gibanel.btactic
Fri Feb 06, 2026 8:25 am
8.8.15_GA_4581.FOSS Download

Last post by mikec24 « Thu Jan 22, 2026 1:53 pm
Replies: 2
by mikec24 » Thu Jan 22, 2026 10:53 am

Hi all

I am in the process of either installing a fresh Maldua Zimbra 10.1.10 or 10.1.15 build or an upgrade from 8.8.15_GA_4581.FOSS to these...

2 Replies

1068 Views

Last post by mikec24
Thu Jan 22, 2026 1:53 pm
Maldua's Zimbra FOSS Builds - 2025 Year Feedback [Archive]

Last post by adrian.gibanel.btactic « Sat Jan 10, 2026 7:21 pm
Replies: 119
by adrian.gibanel.btactic » Tue Dec 24, 2024 6:35 pm
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Maldua's Zimbra FOSS Builds - Share your feedback

This thread is about getting feedback from Maldua's Zimbra FOSS Builds.

- Main (Recommended)...
119 Replies

123218 Views

Last post by adrian.gibanel.btactic
Sat Jan 10, 2026 7:21 pm
ZCS FOSS 10.1.12 - Upcoming FOSS release issues

Last post by adrian.gibanel.btactic « Fri Jan 09, 2026 7:49 am
Replies: 17
by adrian.gibanel.btactic » Mon Oct 13, 2025 11:07 am
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If you keep a track of Github repos commits and recently pushed tags you can deduce that ZCS NE 10.1.12 release (and its ZCS NE 10.0.18 counterpart)...
17 Replies

7563 Views

Last post by adrian.gibanel.btactic
Fri Jan 09, 2026 7:49 am
CBPolicyd Crashing Due To Attempted IPv6 Binding - ZBUG-3074

Last post by ghen « Mon Dec 29, 2025 2:08 pm
Replies: 1
by L. Mark Stone » Mon Dec 29, 2025 1:14 pm

Historically, we've used Ubuntu for most ZImbra deployments, but to get a longer-lived operating system, we've been building new servers on Rocky...

1 Replies

1507 Views

Last post by ghen
Mon Dec 29, 2025 2:08 pm
Over again installation problem Zimbra 10 on rockylinux 9.

Last post by adrian.gibanel.btactic « Mon Dec 29, 2025 12:38 pm
Replies: 17
by Blisk » Wed Dec 17, 2025 9:59 am
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I have installed zimbra now for 7 times, 3 times on fresh new server but always the same problem, just can't start zimbra, I get also installation...
17 Replies

4573 Views

Last post by adrian.gibanel.btactic
Mon Dec 29, 2025 12:38 pm
Bayes Databases Not Created In Clean, New Zimbra 10.1.15 Installation

Last post by L. Mark Stone « Fri Dec 26, 2025 10:23 pm
Replies: 1
by L. Mark Stone » Wed Dec 17, 2025 9:20 pm

I opened a bug report with Zimbra, because I noticed on some newly-built Zimbra 10.1.15 MTA servers that even after a few days there were no Bayes...

1 Replies

1903 Views

Last post by L. Mark Stone
Fri Dec 26, 2025 10:23 pm
Help, i made the update to 10.1.13 ubuntu 20

Last post by Martinwiertz « Mon Dec 22, 2025 8:49 pm
Replies: 17
by alextr » Wed Nov 12, 2025 1:28 am
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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...
17 Replies

6648 Views

Last post by Martinwiertz
Mon Dec 22, 2025 8:49 pm
Can I redirect the webmail of Zimbra 10 to another web page?

Last post by ghen « Wed Dec 17, 2025 8:44 am
Replies: 1
by simonleung » Wed Dec 17, 2025 8:03 am

Can I redirect the webmail of Zimbra 10 to another web page?

1 Replies

1094 Views

Last post by ghen
Wed Dec 17, 2025 8:44 am
Migration from 8.8.15 on 20.04 to 10.1.x on 22.04 (or newer)?

Last post by dgeist « Fri Dec 05, 2025 5:44 pm

by dgeist » Fri Dec 05, 2025 5:44 pm

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...

0 Replies

2786 Views

Last post by dgeist
Fri Dec 05, 2025 5:44 pm
Zimbra 10.1.14 owasp breaks HTML mails

Last post by Martinwiertz « Thu Dec 04, 2025 12:44 pm
Replies: 15
by thomas.klaube » Mon Nov 17, 2025 9:17 am
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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...
15 Replies

6345 Views

Last post by Martinwiertz
Thu Dec 04, 2025 12:44 pm
Unable to upgrade ZCS 10.1.9

Last post by adrian.gibanel.btactic « Tue Dec 02, 2025 7:21 am
Replies: 3
by uxbod » Mon Dec 01, 2025 1:51 pm

Hello all!

Am trying to upgrade an older installation but it's failing. Any ideas on how to resolve or should I look at building a complete new...

3 Replies

2027 Views

Last post by adrian.gibanel.btactic
Tue Dec 02, 2025 7:21 am
Zimbra 10.1.15 Released - Please Post Your Patch/Upgrade Results Here

Last post by uttam.takalkar « Mon Dec 01, 2025 9:06 am
Replies: 12
by adrian.gibanel.btactic » Tue Nov 25, 2025 10:01 am
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Release Notes:

Please post your patching and/or upgrading results here.

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Patch Security Severity. Deployment Risk. ( From blog post )

-...
12 Replies

6669 Views

Last post by uttam.takalkar
Mon Dec 01, 2025 9:06 am
IMPORTANT: DO NOT let system package manger update zimbra-jetty-distribution w/o 10.1.13

Last post by Martinwiertz « Sun Nov 30, 2025 5:49 pm
Replies: 20
by jered » Thu Nov 06, 2025 7:06 pm
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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...
20 Replies

10943 Views

Last post by Martinwiertz
Sun Nov 30, 2025 5:49 pm
Intermittent POP3 password prompts on ZCS 10.1.14 (no authentication logs, proxy issue)

Last post by adrian.gibanel.btactic « Thu Nov 27, 2025 8:32 am
Replies: 1
by Matiaz » Wed Nov 26, 2025 5:47 pm

Hello everyone,
I need help diagnosing a strange POP3 issue on our Zimbra 10.1.14 installation.

We are experiencing intermittent POP3 password...

1 Replies

1681 Views

Last post by adrian.gibanel.btactic
Thu Nov 27, 2025 8:32 am

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