Administrators

New Topic

35634 topics

Page 1 of 1426
- Jump to page:
1
2
3
4
5
…
1426
Next

Topics

Replies

Views

Last post

Zimbra Daffodil (v10.1.16) file preview problem

Last post by dapa6 « Thu Feb 12, 2026 11:31 pm
Replies: 4
by slava_ua » Wed Feb 11, 2026 7:32 am

Good morning!

I don't know what's wrong, but after updating Zimbra to 10.1.16, when I click on a file, the preview opens. However, when I click the...

4 Replies

435 Views

Last post by dapa6
Thu Feb 12, 2026 11:31 pm
New Forum User Unable to Register?

Last post by btrent98 « Wed Feb 11, 2026 10:20 pm

by btrent98 » Wed Feb 11, 2026 10:20 pm

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...

0 Replies

233 Views

Last post by btrent98
Wed Feb 11, 2026 10:20 pm
Slow down password bruteforce attack

Last post by yeak « Wed Feb 11, 2026 4:59 am

by yeak » Wed Feb 11, 2026 4:59 am

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...

0 Replies

241 Views

Last post by yeak
Wed Feb 11, 2026 4:59 am
slapd logging lots of CSN messages, related to z-push, ldap_common_loglevel seems not to work

Last post by Ace Suares « Mon Feb 09, 2026 11:38 am

by Ace Suares » Mon Feb 09, 2026 11:38 am

Hi,
syslog receives thousands of slapd CSN messages:

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

0 Replies

566 Views

Last post by Ace Suares
Mon Feb 09, 2026 11:38 am
Ubuntu 24.04

Last post by BradC « Fri Feb 06, 2026 3:19 am

by BradC » Fri Feb 06, 2026 3:19 am

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...

0 Replies

1043 Views

Last post by BradC
Fri Feb 06, 2026 3:19 am
Inconsistent SMTP AUTH enforcement: Outlook vs Thunderbird

Last post by yeak « Thu Feb 05, 2026 3:27 pm
Replies: 16
by asa » Tue Dec 30, 2025 8:40 am
1

2
We are observing a serious inconsistency in how Zimbra enforces the authenticated sender depending on the mail client.

When a Zimbra mailbox is...
16 Replies

4993 Views

Last post by yeak
Thu Feb 05, 2026 3:27 pm
High scoring openssl vulnerability CVE-2025-15467 - install + reboot

Last post by zmcontrol « Wed Feb 04, 2026 9:33 pm
Replies: 10
by halfgaar » Wed Jan 28, 2026 7:56 pm
1

2
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...
10 Replies

2568 Views

Last post by zmcontrol
Wed Feb 04, 2026 9:33 pm
Autocomplete behaviour change between 9.0 and 10.1

Last post by 7224jobe « Tue Jan 27, 2026 2:51 pm
Replies: 32
by Klug » Fri Jun 13, 2025 1:02 pm
1

2

3

4
Hello.

I've been working on some upgrade from 9.0 to 10.1 this week (rolling upgrade, multi-servers).
We've noticed a change of behavior in...
32 Replies

33432 Views

Last post by 7224jobe
Tue Jan 27, 2026 2:51 pm
generateDomainPreAuthKey

Last post by zgokan « Tue Jan 27, 2026 2:21 am

by zgokan » Tue Jan 27, 2026 2:21 am

Hello

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

0 Replies

1081 Views

Last post by zgokan
Tue Jan 27, 2026 2:21 am
Duplicate email uploads exceeding users quota - ZBUG-4613

Last post by ghen « Fri Jan 23, 2026 4:01 pm
Replies: 9
by Matt » Wed Jan 08, 2025 10:29 am

Hi all,

I have a support ticket open for this (case 01747918) which resulted in a bug being opened (ZBUG-4613). I'm wondering if anyone else is...

9 Replies

5576 Views

Last post by ghen
Fri Jan 23, 2026 4:01 pm
Updated Anti-Spam Best Practices Blog Post

Last post by jered « Thu Jan 22, 2026 7:11 pm
Replies: 2
by L. Mark Stone » Wed Jan 21, 2026 6:13 pm

During 2025 we worked hard on improving our anti-spam best practices and today released an updated version of our blog post (originally written in...

2 Replies

1159 Views

Last post by jered
Thu Jan 22, 2026 7:11 pm
"View mail" with modern UI

Last post by 7224jobe « Wed Jan 21, 2026 11:01 am
Replies: 2
by 7224jobe » Fri Jan 09, 2026 4:35 pm

Hi everybody, if an user has modern UI as default web client, when I try to use View mail function from admin web interface I receive an error from...

2 Replies

1232 Views

Last post by 7224jobe
Wed Jan 21, 2026 11:01 am
Bug Report: Malformed Return-Path Concatenation in Zimbra MTA for Multi-Recipient Messages from Exchange Online

Last post by lovelord « Fri Jan 16, 2026 10:53 am

by lovelord » Fri Jan 16, 2026 10:53 am

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...

0 Replies

1337 Views

Last post by lovelord
Fri Jan 16, 2026 10:53 am
We're getting hit with this one : CVE-2025-68645

Last post by ghen « Thu Jan 15, 2026 12:02 pm
Replies: 7
by BradC » Fri Jan 02, 2026 8:39 am

It's exposing some internal server names and ip addresses, admin port numbers and a few other bits and pieces. Easy enough to run against your own...

7 Replies

2995 Views

Last post by ghen
Thu Jan 15, 2026 12:02 pm
ActiveSync and shared Folders with ZCS 10.0 and 10.1

Last post by frompani « Thu Jan 15, 2026 9:26 am
Replies: 5
by thomas.klaube » Thu Dec 05, 2024 4:00 pm

Hi all,

what are your experiences with ZCS 10.0.x and 10.1.x in terms of ActiveSync and shared mailfolders? In the recent months we upgraded most of...

5 Replies

11287 Views

Last post by frompani
Thu Jan 15, 2026 9:26 am
Network error after upgrade to 8.8.15

Last post by stefan « Tue Jan 13, 2026 11:51 am
Replies: 2
by dimon » Tue Mar 24, 2020 1:52 pm

Hello, there was a problem on only one box, when you go to the Tasks tab, the message Network error appears, if you switch to HTML mode there is no...

2 Replies

2159 Views

Last post by stefan
Tue Jan 13, 2026 11:51 am
error when force users to change password in zimbra 10

Last post by Klug « Mon Jan 12, 2026 9:37 am
Replies: 24
by izadi60 » Mon Jan 29, 2024 6:13 am
1

2

3
Hi
I installed ZCS opensource 10 on Ubuntu 20.04
I faced a problem: I want to force users change their password in first login.I check Must Change...
24 Replies

17232 Views

Last post by Klug
Mon Jan 12, 2026 9:37 am
Constant Zimbra phishing attacks not caught my spamassassin/amavis/rspamd/etc

Last post by jered « Wed Jan 07, 2026 3:34 pm

by jered » Wed Jan 07, 2026 3:34 pm

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...

0 Replies

1603 Views

Last post by jered
Wed Jan 07, 2026 3:34 pm
Thank you

Last post by liverpoolfcfan « Mon Jan 05, 2026 3:11 pm
Replies: 1
by yellowhousejake » Mon Jan 05, 2026 1:36 pm

We have successfully moved our domain from .ORG to .GOV and moved our server from in house to a hosted solution. That was the last item to be handled...

1 Replies

1209 Views

Last post by liverpoolfcfan
Mon Jan 05, 2026 3:11 pm
keycloak saml auth or oauth

Last post by adrian.gibanel.btactic « Mon Dec 29, 2025 12:37 pm
Replies: 4
by zgokan » Thu Dec 18, 2025 12:50 pm

Hello

Is there OpenID or SAML authentication support in the FOSS version?

4 Replies

1694 Views

Last post by adrian.gibanel.btactic
Mon Dec 29, 2025 12:37 pm
Enormous IMAP traffic from Outlook clients to ZCS server

Last post by ghen « Thu Dec 25, 2025 11:42 pm
Replies: 6
by Labsy » Sun Mar 20, 2022 8:11 pm

Hi,

from time to time some newer Outlook client (especially Outlook 2021) begins generating enormous traffic against my ZCS server via IMAP...

6 Replies

24305 Views

Last post by ghen
Thu Dec 25, 2025 11:42 pm
ZBUG-5298 - Modern UI Email Templates Zimlet Fails to Attach Attachments In A Template

Last post by L. Mark Stone « Tue Dec 23, 2025 6:46 pm

by L. Mark Stone » Tue Dec 23, 2025 6:46 pm

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...

0 Replies

2135 Views

Last post by L. Mark Stone
Tue Dec 23, 2025 6:46 pm
Keep switching back to classic client – what features are missing for the final migration to modern web client?

Last post by BradC « Mon Dec 22, 2025 5:18 am
Replies: 4
by oetiker » Thu Nov 20, 2025 8:08 am

Hi,

I've tried multiple times to switch to the modern web client permanently, but I keep reverting to the classic client because several important...

4 Replies

2887 Views

Last post by BradC
Mon Dec 22, 2025 5:18 am
@SYNACOR - FOSS repos are broken for 10.1

Last post by adrian.gibanel.btactic « Thu Dec 18, 2025 5:54 pm
Replies: 2
by liverpoolfcfan » Thu Dec 18, 2025 3:53 pm

@Synacor

The FOSS repos are completely broken for 10.1 (and probably 10.0 releases.) There is a 10.1.14 checkin to the zm-build repo but nothing...

2 Replies

1438 Views

Last post by adrian.gibanel.btactic
Thu Dec 18, 2025 5:54 pm
New December 2025 Zimbra Hotfix Attributes: zimbraMtaSmtpdPriorityFromSender and zimbraMtaSmtpdPriorityToRecipient

Last post by L. Mark Stone « Tue Dec 16, 2025 7:29 pm

by L. Mark Stone » Tue Dec 16, 2025 7:29 pm

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

0 Replies

2389 Views

Last post by L. Mark Stone
Tue Dec 16, 2025 7:29 pm

New Topic

35634 topics

Page 1 of 1426
- Jump to page:
1
2
3
4
5
…
1426
Next

Return to Board Index

Forum permissions

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum