Due to a merger, I am attempting to set up a synchronization between two exchange systems in separate AD forests. One is Exchange 2003 SP2, one is Exchange 2007 SP1. Both forests have a 2 way trust between them, both are at Windows 2003 forest and domain functional level (if that matters). I have a secondary DNS zone hosted by each domain's DNS servers and zone transfers are configured and working. I have a direct T-1 connection between sites these DC's and Exchange servers are at, and I have send connectors on Exchange 2007 set to route mail bound for this domain over the T-1, not via the web, and a separate connector on the Ex 2003 side to do the same.I have set up the Microsoft IIS feature pack with SP2 per instructions on the web, and have sync'ed contacts. I have verified this is working properly and contact's have sync'ed on both sides into a "contacts" OU I created for just this purpose. This is working properly BOTH WAYS. I see the contacts populate in AD Users and Computers.However, contacts are NOT showing up in outlook or the address book. On the 2003 side, f I go into system manager, I can see the contacts if I want to do something like add permissions to a public folder, I see the contacts there (show up as objects with "globes"). I can also see them in the Exchange Management console in the 2007 side under recipients/contacts.Is there anything else I need to to, because outlook clients do not see them. I have never used Exchange 2003 before, I am a long time Novell Groupwise administrator prior to migrating to Exchange 2007 recently. So I am familiar with 2007, but not 2003. The server running MIIS FP is in our forest if that matters.

Hi, To sync GAL we have to use a product called Microsoft Identity Integration Server. You can view the following resource as the reference. http://www.msexchange.org/tutorials/GAL-Sync-Identity-Integration-Feature-Pack-IIFP.html Thanks Allen