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Zimbra release notes are specific to each version of the server. Select your version from the list below to see the release notes for it.

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External Access

These are ports typically available to mail clients.

Examples

Note: For the examples here, we will assume the hostname of the zimbra server is «zimbra.example.com» with an IP address of 10.10.130.10.

Note: Make sure that the localhost «127.0.0.0/8» network is included.

Making sure the LAN interface of the zimbra server itself is allowed

If you see lines like this one in /var/log/zimbra.log when a webmail user (for example, «user@example.com») tries to send mail (for example, to «somebody@domain.com»):

Jun 28 06:39:23 zimbra postfix/smtpd: NOQUEUE: reject: 
RCPT from zimbra.example.com: 554 <somebody@domain.com>: 
Relay access denied; from=<user@example.com> to=<somebody@domain.com> 
proto=SMTP helo=<zimbra.example.com>

You probably see this as well:

postconf mynetworks
mynetworks = 127.0.0.0/8

If you want to allow all the other machines on the 10.10.130.x network to relay, configure the server like this:

zmprov ms zimbra.example.com zimbraMtaMyNetworks '127.0.0.0/8 10.10.130.0/24'
postfix reload

If you don’t want to allow relaying for the network, but only for the zimbra server itself, configure the server like this:

zmprov ms zimbra.example.com zimbraMtaMyNetworks '127.0.0.0/8 10.10.130.10/32'
postfix reload

Allowing relaying for a remote machine

Let’s say you have a single machine on a remote network (for example, an automated mailing list manager with the IP address 10.10.200.25), and the current settings look like this:

postconf mynetworks
mynetworks = 127.0.0.0/8 10.10.130.0/24

Add the remote machine like this:

zmprov ms zimbra.example.com zimbraMtaMyNetworks '127.0.0.0/8 10.10.130.0/24 10.10.200.25/32'
postfix reload

Allowing relaying for a remote network

Let’s say you have POP or IMAP users on a remote network (for example, 192.168.1.x, with a netmask of 255.255.255.0), and the current settings look like this:

postconf mynetworks
mynetworks = 127.0.0.0/8 10.10.130.0/24

Add the remote network like this:

zmprov ms zimbra.example.com zimbraMtaMyNetworks '127.0.0.0/8 10.10.130.0/24 192.168.1.0/24'
postfix reload

Download and Install

What are the prerequisites of installing and running Zimbra Desktop?

Before you start, you should check out the Zimbra Desktop Release Notes where you can read about the latest release and known issues.

What platforms do Zimbra Desktop support?

Zimbra Desktop can run on Microsoft Windows XP, Microsoft Windows Vista, Microsoft Windows 7, Apple Mac OS X Snow Leopard, and a variety of Linux (i686) flavors including Ubuntu, Debian, Fedora, SUSE, etc.

Can I use Zimbra Desktop on a shared computer?

Yes. Zimbra Desktop supports multi-user systems and «quick user switch». Each user’s data are completely isolated from one another.

Where is the install location?

While you can choose to install to any folder on your computer, the default install paths on the respective platforms are as follows:

• Microsoft Windows XP, Vista and 7 (32bit) — C:\Program Files\Zimbra\Zimbra Desktop
• Microsoft Windows Vista and 7 (64bit) — C:\Program Files (x86)\Zimbra\Zimbra Desktop
• Mac OS Snow Leopard — /Applications/Zimbra Desktop
• Linux — /opt/zimbra/zdesktop

In the rest of this FAQ we will refer to the install location as <install>.

On Linux, the default install location /opt/zimbra/zdesktop often requires root permission. If that is the case, run the Linux installer as root. Answer «No» when asked to «continue to install data files for user: root». Login as regular user to complete the second part of the installation.

Where is the user data location?

Each user’s data is under their standard data location on the respective platforms as follows:

• Microsoft Windows XP — C:\Documents and Settings\<username>\Local Settings\Application Data\Zimbra\Zimbra Desktop
• Microsoft Windows Vista and 7 — C:\Users\<username>\AppData\Local\Zimbra\Zimbra Desktop
• Mac OS X Snow Leopard — /Users/<username>/Library/Zimbra Desktop
• Linux — <home>/zdesktop

where <username> is the username of the user and <home> is the home directory of the user. In the rest of this FAQ will refer to the user data location as .

I have older versions of Zimbra Desktop installed. Can I upgrade to the latest version of Zimbra Desktop?

How do I know which version/build I’m running?

Run Zimbra Desktop.

• Windows: Zimbra Desktop has a tray icon in the system tray. Right click the tray icon and select «About Zimbra Desktop». The About dialog will show your version and build number. Remember to always include your version and build number when reporting issues.
• Linux: Click on the «Gears» icon in the bottom left of the application window. Select «About Zimbra Desktop».
• Mac OS: Right click Zimbra Desktop’s dock icon while it’s running. Select «About Zimbra Desktop».

How to install spell checker dictionaries?

Zimbra Desktop includes one default spell checker dictionary of U.S. English (en-US). Follow these steps to install dictionaries in other supported locales.

(1) Download the dictionaries from these links:

(2) Unzip the dictionary package to the «dictionaries» directory. Depending on which OS you are running, the directory location is:

• Microsoft Windows: <install>\win32\prism\xulrunner\dictionaries
• MacOS: <install>/macos/prism/Prism.app/Contents/Frameworks/XUL.framework/dictionaries
• Linux: <install>/linux/prism/xulrunner/dictionaries

(3) Edit <user data>/profile/user.js file and set correct locale to «spellchecker.dictionary» user preference. For example, if you want to use U.K. English dictionary, you should have this line in your user.js:

user_pref(«spellchecker.dictionary», «en-GB»);

(4) Restart Zimbra Desktop.

Feature Comparison with Competing Products

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Data Synchronization

How much data is stored on a user’s computer?

Zimbra Desktop is designed to download all user data in the cloud to store on the user’s computer. This approach allows Zimbra Desktop users to access all of their data when offline.

Where are the data stored?

Actual data is stored as files under <data>/store, where each item is a single file. Metadata is stored in a SQLite database under <data>/sqlite. In addition, indexes on data are stored under <data>/index. These three folders contain all user data, and any direct modification to these data will result in corruption and possible data loss.

While that is possible, it is not recommended. If you choose to do file based backup, you must first quit Zimbra Desktop before running any types of backup.

However we recommend users do backup using the import/export feature instead. You will find this feature under the tab Preferences > Local Folders. Zimbra Desktop users should regularly backup their accounts using the export tool. Regular manual backup is even more important for POP accounts and Local Folders where you only have one copy of the data on local disk (as opposed to «synced accounts» like Zimbra, Yahoo, Gmail or IMAP where you have another copy of everything on back-end server).

Is my data stored on my computer secure?

Currently Zimbra Desktop does not provide application level encryption. It is important that you choose a secure file system and not give others access to your computer.

Are all my data in Zimbra Desktop always in sync with my data in the cloud?

That depends on the type of account, what you choose to synchronize, and how often Zimbra Desktop synchronizes with remote servers. For Zimbra accounts, virtually 100% of data is synchronized with the server, including user preferences. The only data not in sync are changes you made since the last synchronization. For Gmail, Yahoo! Mail, Exchange IMAP and other IMAP mailboxes, user preferences are not synchronized with the server. For POP accounts, all data are stored locally only once they are downloaded. In addition, all data that is under Local Folders are stored locally only. Data that only exist locally in Zimbra Desktop is referrred to as local data.

If my hard drive dies and I have no data backup, do I lose all my data?

You will lose all your local data. Data still in your mailboxes in the cloud can be downloaded again once you setup a new Zimbra Desktop install. Therefore, it is important to backup your mailbox data periodically, especially your local data. It is also worth noting that when you choose to delete or reset a mailbox, all data including changes you made since your last sync is deleted from your local computer although data under Local Folders will remain.

How often does Zimbra Desktop synchronize with remote servers?

That depends on the sync schedule you choose for each of your accounts. Zimbra accounts support the option to synchronize whenever your mailbox on the server has any new changes, which is referred to as «push». Zimbra Desktop currently doesn’t support «push» for other types of accounts. You can also force an immediate sync of all accounts by clicking the «Send/Receive» button. If there are outgoing messages in your Outbox, sync will run immediately unless your sync schedule is set to «manual». With «manual» setting you must click the «Send/Receive» button to even send outgoing messages.

Can the latest Zimbra Desktop version synchronize with older versions of ZCS servers?

Zimbra Desktop 7.x does not work with ZCS 5.0 or earlier. Zimbra Desktop 7.x is mostly compatible with ZCS 6.x, with the exception of «Documents» (WiKi) app. Documents app is deprecated in Zimbra Desktop 7.0 (and in ZCS 7.0 as well). To access Documents on ZCS 6.x, users have to use the web client.

How do I uninstall Zimbra Desktop?

On Microsoft Windows you can also use «Add or Remove Programs» to uninstall. On Mac and Linux, shutdown the data engine and then remove everything under <install>. You can optionally also delete everything under <data> if you no longer need the user data.

General Questions

Is Zimbra Desktop really free?

Yes. Zimbra Desktop is open source and free. We make both the software code and the application itself available to anyone at no charge.

Does Zimbra Desktop contain any spyware?

Absolutely not. In fact 100% of the Zimbra Desktop code is open source so everything the software does is open to the public.

What types of accounts are supported by Zimbra Desktop?

Zimbra Desktop supports the following account types:

• Gmail
• Yahoo! Mail
• Microsoft Exchange (via IMAP)
• Other email services using POP3 or IMAP4 access

Can I setup multiple accounts of the same or different types in one installation?

Yes. You can setup as many or as few accounts as you need. For example, you can setup two Gmail accounts of different usernames or domains, one Yahoo! Mail account, and one IMAP account for your company’s IMAP server.

Is Zimbra Desktop available in my language?

Currently Zimbra Desktop does not offer a localized installer and account setup. However, after installation and configuration the application supports 20+ languages. You can set your languages from you Zimbra Desktop Preferences.

I found a bug. How do I report it?

If this is your first time logging a bug, you will need to register an account. By doing this you will be notified on every update to the bug you file.

I have this brilliant idea to make Zimbra Desktop significantly better. How do I get it into the product?

Overview

Command Format

The format of a Zimbra REST command is:

{protocol}://{host}:{port}/home/{user}/{object}?{params} 

HTTP methods are for reading items. HTTP methods are for creating/modifying items. The following describes the components of the Zimbra REST command:

http://localhost:7070/home/john.doe@mydomain.com/inbox.rss

http://localhost:7070/home/~/inbox.rss

http://localhost:7070/home/john.doe/inbox.rss

http://localhost:7070/home/john.doe/?id=657

Response Formats

The following describes the various response formats, designated using the parameter. Not all commands support all formats. See the specific command for a list of supported formats and command-specific details:

http://localhost:7070/home/john.doe/?id=288&fmt=sync

http://localhost:7070/home/john.doe/?id=288&fmt=sync&nohdr=1

Authentication

There are multiple methods to authenticate as a user when accessing a mailbox. Using the parameter, you can designate how to authenticate and whether or not to set the authentication cookie.

Default is . Meaning: first, check for a cookie auth token; second, check for query parameter auth token; thrid, prompt for basic authentication.

The parameter supports a list of comma-separated values which include:

http://localhost:7070/home/john.doe/inbox.rss?auth=co

http://localhost:7070/home/john.doe/inbox.rss?auth=qp&zauthtoken=0_thisismyzauthtokenthisismyzauthtoken_thisismyzauthtoken

http://localhost:7070/home/john.doe/inbox.rss?auth=ba

Multi-account Goodies

What is the «All Mailboxes» section?

It’s a virtual mailbox that shows an integrated view of all your physical mailboxes. The virtual Inbox under «All Mailboxes» shows messages from Inboxes in all of your physical mailboxes. Other virtual folders under «All Mailboxes» work the same way.

What account identity will it use when I reply or forward a message in a virtual folder?

By default it will use the identity to which the original message was sent. However you can always switch to a different identity in the composer. In fact you can even switch to an identity that belongs to a different physical mailbox.

I don’t like seeing messages from different mailboxes together. Can I turn off «All Mailboxes»?

What is the «Local Folders» section?

That’s a separate mailbox that doesn’t sync with any server account. A folder under «Local Folders» is a local folder. All items in a local folder exist on your computer only. You can move or copy items from any account to a local folder so that those items are saved on your computer.

Can I move a meeting from one account to another?

Yes. For example, if you have one Zimbra account and one Gmail account with calendar sync enabled, you can move a meeting in Google account to your Zimbra account. However by doing so you are deleting the meeting from your Google calendar and adding it to your Zimbra server mailbox.

Internal Access

These are ports typically only used by the Zimbra system itself.