Zimbra Forums

I currently have a CentOS7 installation of Zimbra 9.x Network Edition with approx 75 users. I am obviously needing to get away from CentoS 7 and...

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...

While we are still waiting for security fixes from earlier releases to be made available - 10.1.10 & 10.0.16 have now been added to the repo

Hi Zimbra Admins,
I’m struggling with a PHP app that’s supposed to send emails through my Zimbra server’s SMTP on port 587, but it keeps timing out....

Hi,

I have Zimbra desktop for Windows 11, and the PDF preview is not working.
Is there a plug in I can install to be able to see PDF ?

Thank you...

Sorry, Found the problem, I might accidentaly unchecked the MTA service from the Server Services Configuration at the Web Administation console.

Is Zimbra Desktop Secretly Spying on Your Emails?

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...

G'day All,

This is nothing more than a random thought bubble, so please treat it as such.

With the inevitable march to shorter and shorter SSL...

i have a Zimbra SEMAR account. I was wondering if there is a way to add my Zimbra SEMAR account to my Iphone using Mail app, to login instead of...

Hi,

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

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...

Hi everyone,

I've deployed Zimbra in multi node architecture (LDAP, MAILSTORE, MTA/PROXY)

Some users have error on the webmail Unable to...

Hi,

I'm running `Release 10.1.9.GA.4633.UBUNTU20_64 NETWORK edition.` and since the upgrade from 10.0 to 10.1 the
Autocompletion does not work...

Went to do a test upgrade this morning and had apt reject the repositories.
The following signatures were invalid: EXPKEYSIG 5234D2B73B6996C7 Zimbra...