Installation and Upgrade

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Server migration from CentOS7 to RHEL9. Same 10.1 version not available

Last post by sb0373 « Sat Mar 14, 2026 7:37 am
Replies: 9
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...

9 Replies

2262 Views

Last post by sb0373
Sat Mar 14, 2026 7:37 am
Maldua's Zimbra FOSS Builds - Share your feedback

Last post by adrian.gibanel.btactic « Tue Mar 10, 2026 2:32 pm
Replies: 39
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)...
39 Replies

12939 Views

Last post by adrian.gibanel.btactic
Tue Mar 10, 2026 2:32 pm
Maldua's Zimbra FOSS Builds - 2025 Year Feedback [Archive]

Last post by adrian.gibanel.btactic « Tue Mar 10, 2026 12:42 pm
Replies: 121
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)...
121 Replies

135143 Views

Last post by adrian.gibanel.btactic
Tue Mar 10, 2026 12:42 pm
Zimbra 10.1.16 Released - Please Post Your Patch/Upgrade Results Here

Last post by adrian.gibanel.btactic « Mon Mar 02, 2026 12:07 pm
Replies: 36
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...
36 Replies

10096 Views

Last post by adrian.gibanel.btactic
Mon Mar 02, 2026 12:07 pm
Zimbra Multi Server not installing correctly

Last post by stegtatodc « Fri Feb 27, 2026 10:55 pm
Replies: 5
by stegtatodc » Thu Feb 19, 2026 11:57 pm

Hello Zimbra Community,
I am having a hard time installing Zimbra on a 2 server environment. I originally started installing a demo license of the...

5 Replies

1842 Views

Last post by stegtatodc
Fri Feb 27, 2026 10:55 pm
zmmailbox : Exception in thread "main" java.lang.OutOfMemoryError: Java heap space

Last post by adrian.gibanel.btactic « Mon Feb 23, 2026 4:57 pm
Replies: 19
by Leeloo » Tue May 27, 2025 8:02 am
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Hello,

I use zmmailbox to create dump/backup of my mailboxes.
But after upgrade to Release 10.1.8 .GA.4633.RHEL8_64.20240610085557 NETWORK edition....
19 Replies

23158 Views

Last post by adrian.gibanel.btactic
Mon Feb 23, 2026 4:57 pm
Maldua's Zimbra 10 FOSS Build system

Last post by adrian.gibanel.btactic « Mon Feb 23, 2026 4:08 pm
Replies: 63
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...
63 Replies

162399 Views

Last post by adrian.gibanel.btactic
Mon Feb 23, 2026 4:08 pm
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

2809 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

3736 Views

Last post by darkfader
Wed Feb 18, 2026 2:03 pm
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

757 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: 103
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...
103 Replies

243275 Views

Last post by darkfader
Tue Feb 17, 2026 12:04 am
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

2830893 Views

Last post by innotelinc
Mon Feb 16, 2026 8:29 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

1697 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

2187 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

1777 Views

Last post by mikec24
Thu Jan 22, 2026 1:53 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

9599 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

2221 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

6167 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

2708 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

8841 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

1768 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

4361 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

8416 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

2907 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

8705 Views

Last post by uttam.takalkar
Mon Dec 01, 2025 9:06 am

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