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Globally protecting Zimbra against XSS with Content-Security-Policy

Last post by jered « Sat Jun 21, 2025 1:26 am
Replies: 1
by halfgaar » Sat Jun 21, 2025 12:53 am

Zimbra keeps playing 'whack-a-mole' with XSS (cross-site scripting, or script injection) (like CVE-2025-27915 ), so I've made protection using a...

1 Replies

64 Views

Last post by jered
Sat Jun 21, 2025 1:26 am
Zimbra Security Problem

Last post by halfgaar « Sat Jun 21, 2025 12:41 am
Replies: 4
by dstuncer » Thu Jun 19, 2025 3:40 pm

Hello,
I urgently need your support. I am using Zimbra version 8.8.15_GA_4484.FOSS. I have discovered that my server was somehow hacked and one of my...

4 Replies

190 Views

Last post by halfgaar
Sat Jun 21, 2025 12:41 am
zmconifgd logs Command not defined

Last post by umashankar.avagadda « Thu Jun 19, 2025 2:17 am
Replies: 5
by oetiker » Sun May 11, 2025 7:02 pm

Hi

In my zimbra (Release 10.1.7.GA.4633.UBUNTU20_64 NETWORK edition)

zmconfigd logs:

May 11 20:58:52 zimbra zmconfigd : Command not defined for...

5 Replies

1489 Views

Last post by umashankar.avagadda
Thu Jun 19, 2025 2:17 am
Duplicate entries in /var/log/zimbra.log

Last post by adrian.gibanel.btactic « Tue Jun 17, 2025 2:19 pm
Replies: 6
by horobi » Thu Jun 05, 2025 3:16 pm

Hi, i've upgraded a Zimbra 8.8.15 installation on Ubuntu 18.04, upgrading the os to 20.04 and then reinstalling Zimbra 8.8.15 for Ubuntu 20.04

All...

6 Replies

501 Views

Last post by adrian.gibanel.btactic
Tue Jun 17, 2025 2:19 pm
Autocomplete behaviour change between 9.0 and 10.1

Last post by Klug « Mon Jun 16, 2025 6:36 am
Replies: 8
by Klug » Fri Jun 13, 2025 1:02 pm

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...

8 Replies

486 Views

Last post by Klug
Mon Jun 16, 2025 6:36 am
Migration from 8.8.15 to 10.x - question about tags

Last post by Klug « Fri Jun 13, 2025 12:54 pm
Replies: 3
by it@dynacomtm.com » Thu Jun 12, 2025 2:18 pm

Hello,
We are currently migrating our production environment from 8.8.15 to latest 10.x Zimbra version and we are wondering if there is a way to...

3 Replies

215 Views

Last post by Klug
Fri Jun 13, 2025 12:54 pm
External AntiSpam Gateway iIntegration

Last post by liverpoolfcfan « Thu Jun 12, 2025 12:17 am
Replies: 11
by alaurent » Thu Jun 05, 2025 5:47 pm
1

2
I need to integrate an external AntiSpam Gateway solution with my Zimbra. What should I do from the GW to the email headers so that Zimbra moves them...
11 Replies

861 Views

Last post by liverpoolfcfan
Thu Jun 12, 2025 12:17 am
CVE-2025-24813

Last post by Thomasfrank « Mon Jun 09, 2025 4:22 am
Replies: 6
by darkfader » Thu Mar 13, 2025 6:35 pm

Hi,

this CVE smells like it affects Zimbra, and importantly, across many generations of installations.
Could anyone comment on what they think the...

6 Replies

4605 Views

Last post by Thomasfrank
Mon Jun 09, 2025 4:22 am
Mailbox - difference between /opt/zimbra/store and zmprov gqu

Last post by BradC « Thu Jun 05, 2025 11:18 am
Replies: 1
by zimbraadmin789789 » Thu Jun 05, 2025 9:38 am

Hello,

I have an anomaly in my zimbra server
For some accounts the size indicated by zmprov gqu is excessively smaller than the size of the mailbox...

1 Replies

204 Views

Last post by BradC
Thu Jun 05, 2025 11:18 am
Outlook Pst migration to Zimbra-8.8.15_GA_4581.FOSS

Last post by BradC « Thu Jun 05, 2025 12:49 am
Replies: 2
by Ankit Sharma » Wed Jun 04, 2025 6:28 am

Hi Team,

I currently running Zimbra-8.8.15_GA_4581.FOSS and want to move outlook pst to zimbra. So i have checked zimbra migration tool on zimbra...

2 Replies

289 Views

Last post by BradC
Thu Jun 05, 2025 12:49 am
HTTP ERROR 404 permission denied

Last post by BradC « Wed Jun 04, 2025 6:27 am
Replies: 7
by computernala » Thu May 29, 2025 4:25 am

Hi.
I am an IT person in a small company that uses zimbra.
I moved from zimbra 8.6 to 10.1.6 yesterday.
But today I ran into a serious problem.
I...

7 Replies

712 Views

Last post by BradC
Wed Jun 04, 2025 6:27 am
10.1.8 NE incremental backup when redo.log <1GB archival size?

Last post by pixelplumber « Tue Jun 03, 2025 11:45 pm
Replies: 1
by pixelplumber » Tue Jun 03, 2025 12:53 pm

Have been on a ver9 NE with NG backup module in use and upgraded to 10.1.8 before EOL end of June. Setup the NE backup (standard) and have been...

1 Replies

243 Views

Last post by pixelplumber
Tue Jun 03, 2025 11:45 pm
Password Reset not working

Last post by bennhana « Tue Jun 03, 2025 12:04 pm
Replies: 2
by bennhana » Tue Jun 03, 2025 9:07 am

Hi all

I have a client having issues with her password. I reset the password in Zimbra but when I try to log in on webmail it's not working. I...

2 Replies

264 Views

Last post by bennhana
Tue Jun 03, 2025 12:04 pm
Getting zimbra message id (from postfix id)

Last post by haimeo1201 « Mon Jun 02, 2025 11:11 pm

by haimeo1201 » Mon Jun 02, 2025 11:11 pm

Hey guys, i'm developing a notification service for zimbra user whether they receive a new email

Using a filter (rspamd) i was able to get the...

0 Replies

218 Views

Last post by haimeo1201
Mon Jun 02, 2025 11:11 pm
[RESOLVED] cbpolicyd for SMTP/SASL mail, how to configure? seems not to work

Last post by salmon « Sat May 31, 2025 2:07 am
Replies: 5
by Ace Suares » Thu Apr 24, 2025 12:10 pm

Hi there,

I have cbpolicyd installed but still, when a users password is hacked via phishing, way more than the limits in quotas are sent out. The...

5 Replies

2422 Views

Last post by salmon
Sat May 31, 2025 2:07 am
I cannot remove the password restrictions in Zimbra

Last post by yellowhousejake « Fri May 30, 2025 6:50 pm
Replies: 1
by yellowhousejake » Fri May 30, 2025 6:41 pm

In moving our password policy we need to remove the requirement for uppercase letters, special characters, and numbers. I have done so in all my COS...

1 Replies

220 Views

Last post by yellowhousejake
Fri May 30, 2025 6:50 pm
Sent mail re-appearing in a mailbox until it is full

Last post by rainer_d « Wed May 28, 2025 9:22 am

by rainer_d » Wed May 28, 2025 9:22 am

We've had a strange case yesterday where a use sent a mail and it apparently appeared in his inbox over and over again (as new message) until he was...

0 Replies

506 Views

Last post by rainer_d
Wed May 28, 2025 9:22 am
Blacklist Domain, Whitelist Sender

Last post by airborne180 « Wed May 28, 2025 4:42 am

by airborne180 » Wed May 28, 2025 4:42 am

User here, mostly accessing via web GUI. Some time ago, I was receiving a significant amount of phishing etc. from a specific (large) domain, which I...

0 Replies

364 Views

Last post by airborne180
Wed May 28, 2025 4:42 am
Restricted OOO Senders

Last post by Quandell00 « Tue May 27, 2025 8:03 am

by Quandell00 » Tue May 27, 2025 8:03 am

Hello,

I was wondering if there's a way to define a global list of senders that will not trigger Out of Office (OOO) replies. Specifically, I'm...

0 Replies

371 Views

Last post by Quandell00
Tue May 27, 2025 8:03 am
Assign owner to a distribution list

Last post by Allad1995 « Mon May 26, 2025 4:42 am

by Allad1995 » Mon May 26, 2025 4:42 am

Hi everyone,
I've just created around 150 distribution lists (DLs) and now need to assign an owner to each. I'd prefer this via the command line...

0 Replies

641 Views

Last post by Allad1995
Mon May 26, 2025 4:42 am
outlook 50gb limit

Last post by ethicalcomputing « Fri May 23, 2025 12:36 pm
Replies: 1
by zgokan » Mon Apr 28, 2025 12:02 pm

Hello,

50 GB of space is causing problems with Outlook. How can I solve this issue? What should I pay attention to?
Unfortunately, I have users...

1 Replies

2216 Views

Last post by ethicalcomputing
Fri May 23, 2025 12:36 pm
/opt/zimbra/bin/zmacl and crowdstrike detections

Last post by adrian.gibanel.btactic « Fri May 23, 2025 7:35 am
Replies: 3
by yeak » Thu May 22, 2025 11:07 am

We have seen two customers reporting their 10.1.7 server has been detected suspicious by Crowdstrike due to new /opt/zimbra/bin/zmacl script...

3 Replies

634 Views

Last post by adrian.gibanel.btactic
Fri May 23, 2025 7:35 am
Domain name change

Last post by yellowhousejake « Wed May 21, 2025 5:26 pm
Replies: 4
by yellowhousejake » Tue May 20, 2025 7:10 pm

Yes, I have read prior posts about this topic. I have also read the Wiki (entries I could find. I won't say I have read them all).

For reasons...

4 Replies

674 Views

Last post by yellowhousejake
Wed May 21, 2025 5:26 pm
How can i block outgoing emails to one specific email address?

Last post by dapa6 « Wed May 21, 2025 4:23 pm
Replies: 1
by adamdudzik » Tue May 20, 2025 10:11 am

Hi, how can i block outgoing emails to one specific email address?

I found this document it covers versions up to ZCS 8.7 and later.

But it's...

1 Replies

471 Views

Last post by dapa6
Wed May 21, 2025 4:23 pm
Plain text mail content in web client

Last post by BradC « Mon May 19, 2025 2:39 pm
Replies: 4
by haimeo1201 » Mon May 12, 2025 3:44 am

Hi all.

I'm using zimbra 9.0, when trying to mail to myself from outlook, web mail often return plain text content but in outlook the format stays...

4 Replies

1801 Views

Last post by BradC
Mon May 19, 2025 2:39 pm

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