We are in the middle of our Zimbra demo right now and things are going well. Initially we plan on running the split domain model until our Exchange agreement with MS is up. One problem I can already for see is Exchange users wanting to see Zimbra users in the Exchange GAL (I have it setup going the other way and that works great). Is this possible with the current version of Zimbra and if not, has anyone found a work around for this in the past? Thanks in advance!