We're currently testing out ZCS. The test users are using Outlook 2003 with the Outlook connector (ZimbraOlkConnector-3.1.2_GA_435_3.1.922). Every morning the initial sync takes around 30-60 minutes to pull down all email / custom folders to their client. Once the initial sync is done, everything performs rather well. The problem is the initial sync. Is there a way to this speed up? The ZCS server is at a remote location and users are accessing it via a T1, though the connection is utilized by other users aswell.