To enable calendar searches to look at the LDAP directory first, and the calendar database second, perform the following steps:
Edit the service.calendarsearch.ldap parameter in the ics.conf file, setting the parameter to “yes”, which is the default, as shown below:
Restart Calendar Services as follows:
If you are allowing anonymous access to public calendars, you might prefer to disable calendar searches from looking at LDAP. In fact, Communications Express expects the parameter value to be “no”.