I'm not sure what needs to be altered to list more than 100 search results. I get this dialog when searching for "*" against the GAL (we have less than 200 entries in the GAL) and the "Attendees" screen when setting up a calendar event. Also:
zmprov sg <domain name> * limit 99999
only lists 100 users. I've tweaked a few different settings including the items below but I'm not sure how to fix this.