ZCS Administrator Guide 7.2.1

Open Source Edition

Global Address List (GAL) Mode

The Global Address List (GAL) is your company-wide listing of users that is available to all users of the email system. See Zimbra LDAP Service on page 27.

GAL is configured on a per-domain basis. The GAL mode setting for each domain determines where the GAL lookup is performed.

Select one of the following GAL configurations:

Internal. The Zimbra LDAP server is used for directory lookups.

External. External directory servers are used for GAL lookups. You can configure multiple external LDAP hosts for GAL. All other directory services use the Zimbra LDAP service (configuration, mail routing, etc.). When you configure the external GAL mode, you can configure GAL search and GAL sync separately.

Both. Internal and external directory servers are used for GAL lookups.

Creating GAL sync accounts

To give users faster access to GAL, when you configure an internal or external GAL, you can set up an account in ZCS that is configured to sync to the GAL data. You define the GAL datasource and the contact data is syncd to address book.

If the mode Both is selected, an address book is created for each LDAP data source.

When a datasource is configured in this account, the GAL configuration on the domain is overridden.

The internal GAL polling interval for the GAL sync determines how often the GALsync account syncs with the LDAP server. The sync intervals can be in x days, hours, minutes, or seconds.

When the GAL sync account syncs to the LDAP, all GAL contacts from the LDAP are added to the address book for that GAL. During the sync, the address book is updated with new contact, modified contact and deleted contact information. You should not modify the address book directly. When the LDAP syncs the GAL to the address book, changes you made directly to the address book are deleted.

If the GALsync account is not available for some reason, the traditional LDAP based search is run.

See Appendix A Command-Line Utilities, the CLI zmgsautil for information about the GALsync CLI command,

Changing GAL sync account name.

The default name for the GAL sync account is galsync. When you configure the GAL mode, you can specify another name. After the GAL sync account is created, you cannot rename the account as the data sync will not work.

To change the account name you delete the existing GAL sync account and configure a new GAL for the domain.

1.	Select the domain where you want to change the GAL sync account name.

2.	Select Configure GAL to open the configuration wizard and change the GAL mode to internal. Do not configure any other fields. Click Finish.

3.	In the domain’s account Content pane, delete the domain’s galsync account.

4.	Select the domain again and select Configure GAL to reconfigure the GAL. In the GAL sync account name field, enter the name for the account. Complete the GAL configuration and click Finish. The new account is displayed in the Accounts Content pane.

Configuring GAL Search for External GALs

When you configure an external GAL, you can configure different search settings and sync settings. You may want to configure different search settings if your LDAP environment is set up to optimize LDAP searching by setting up an LDAP cache server, but users also will need to be able to sync to the GAL.