We recently migrated from Exchange to Zimbra. One of the initial concerns were the loss of the Global Address Book from Exchange. To solve this, we were able to add the Microsoft LDAP service from Outlook and put in the mail store information of Zimbra, and it works well -- two issues however:
1. The contacts only appear after you try to search for users with an empty query. From here, Outlook returns an error on an LDAP search limit and returns a list of users. The users aren't automatically shown on the list when you click on "To:" during mail composition -- you will need to do a search query before the list gets populated.
2. During a blank search, it complains of a search limit on the LDAP server. How do we remove this limit?