Zimbra Forums

Hi Team,

Could you please advise on how to calculate the required hardware specifications for hosting 300 mailboxes, each with a size of 100 GB?...

Hi all,

on some of our Zimbra Servers we see error messages like these:

2025-07-28 00:11:58,792 WARN mailbox - error copying notifications; will...

Hi everyone.

I decided to upgrade to 10.1.10-NETWORK from 9.0 FOSS+zextras
i'll install a new VM for that (single server)
I have a few concern about...

Is this normal? If I check my inbox, it's not even hundreds per day, or even hundreds or thousands per hour.
Perhaps someone has experienced the same...

Hi davidjames78,

That’s a frustrating issue with the PHP app timing out on Zimbra’s SMTP port 587! I’ve hit similar snags with Zimbra Collaboration...

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?

I opened a Support Case to see if it would be OK to change Postfix's attribute smtputf8_enable from no to yes , understanding that this implies full...

My organization will be upgrading from Zimbra 8.5 to 10 and originally we were planning to migrate all data from the old server to the new one using...

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...

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...

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...

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...

Same poster that asked for a Thunderbird to PDF tool on Saturday. Matches all the characteristics of a spammer getting comfortable.

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...

FYI this is at

Took me a while to find it, but I'd like to hear more.

Hey guys!

We have a couple of department mailboxes that are over 50 GB in total size. Exchange 2010 is what is running server side.
Users are...

Hi, I want to use Zimbra only for sending email, without needing to handle incoming mail. For example, I have a domain example1.com, and I have email...

Good morning, I'm migrating from Exchange server to Zimbra and I'm having problems with Teams integration.
For those who use O365, it is possible to...

I find searching in a mailbox excellent.

Do you perhaps have an issue indexing a mailbox, or is indexing working on your system at all?

Zeta Alliance handover to bTactic

1. Introduction

Barry de Graaff is out of the Zimbra world and has handed Zeta Alliance project over to bTactic...

In Zimbra's zm-mailbox develop branch we can find a big squashed commit named Merge commit from fork .

The commit seems to be more than 10 commits...

I am planning a continuous upgrade for my system and would like to know how the OS version affects the process. Does each node need to be on the same...

Been looking over the forums and best I saw was some unanswered posts about 10 years ago. We're looking to consolidate some accounts that are just...

HI
Currently i was wondering if someone could shed somelight,
Currently this month some users having issue on slow web interface on zimbra, but...