To get the same view of the GAL from both exchange and zimbra, provision all the users in AD (Zimbra and Exchange users). Then configure Zimbra to use AD as the external GAL so the Zimbra users see the same GAL as the Exchange users. If your zimbra users are already in AD (which they might if you are on a windows domain), configure Zimbra to do external auth against AD and your zimbra users won't require new passwords. |