ZCS Administrator Guide 8.0

Open Source Edition

Zimbra Free/Busy Calendar Scheduling

The Free/Busy feature allows users to view each other’s calendars for efficiently scheduling meetings. You can set up free/busy scheduling across ZCS and Microsoft Exchange servers.

ZCS can query the free/busy schedules of users on Microsoft Exchange 2003, 2007, or 2010 servers and also can propagate the free/busy schedules of ZCS users to the Exchange servers.

To set free/busy interoperability, the Exchange systems must be set up as described in the Exchange Setup Requirements section, and the ZCS Global Config, Domain, COS and Account settings must be configured. The easiest way to configure ZCS is from the administration console.

Exchange 2003/2007/2010 Setup Requirements.

The following is required to set up the free/busy feature:

Either a single Active Directory (AD) must be in the system or the global catalog must be available.

The ZCS server must be able to access the HTTP(S) port of IIS on at least one of the Exchange servers.

Web interface to Exchange public folders needs to be available via IIS. (http://server/public/)

ZCS users must be provisioned as a contact on the AD using the same administrative group for each mail domain. This is required only .

For ZCS to Exchange free/busy replication, the Exchange user email address must be provisioned in the account attribute zimbraForeignPrincipal for all ZCS users.

Configuring Free/Busy on ZCS

To set Free/Busy Interoperability up from the administration console, the global config, Domain, COS and Account settings must be configured as described here.

Either globally or by domain configure the Exchange server settings.

•	Microsoft Exchange Server URL. This is the Web interface to the Exchange.

•	Microsoft Exchange Authentication Scheme, either Basic or Form.

•	Basic is authentication to Exchange via HTTP basic authentication.

•	Form is authentication to Exchange as HTML form based authentication.

•	Microsoft Exchange Server Type, either WebDav or ews

•	Select WebDAV to support free/busy with Exchange 2003 or Exchange 2007.

•	Select ews (Exchange Web Service) to support free/busy with Exchange 2010, SP1.

Include the Microsoft Exchange user name and password. This is the name of the account in Active Directory and password that has access to the public folders. These are used to authenticate against the Exchange server on REST and WebDAV interfaces.

Add the o and ou values that are configured in the legacyExchangeDN attribute for Exchange on the Global Config Free/Busy Interop page, the Domain Free/Busy Interop page or on the Class of Service (COS) Advanced page. Set at the global level this applies to all accounts talking to Exchange.

In the Account’s Free/Busy Interop page, configure the foreign principal email address for the account. This sets up a mapping from the ZCS account to the corresponding object in the AD.

Note:

To find these settings on the Exchange server, you can run the Exchange ADSI Edit tool and search the legacyExchangeDN attribute for the o= , ou= , and cn= settings.