The addressbook does not have a large list of configuration settings, but those that are there can be found in the Tools menu.
To add a new LDAP server to your available contact folders:
Select Tools->Addressbook Sources from the menu.
Click the Add button on the right side.
Enter the server information:
The name that you see on the screen. This could be anything you wish.
Address of the server where the addressbook is located.
Select this if the server requires Evolution to provide a server in order to access the LDAP contacts.
The internet port Evolution connects to in order to access the LDAP database. This is normally 389.
The base entry to use for all your searches. Contact your administrator for information about the correct settings.
How broad the search is in the directory. The following options are available:
Searches just the Search Base. Most of the time, not very useful.
Searches the Search Base and one entry below it.
Searches the Search Base and all entries below it.
Click OK.
Click OK to permanenty make changes or Apply to temporarily set the changes.