Hi Guys, I have a customer (abc) who is about to merge with another company (xyz). Company abc run Exchange 2003 Company xyz run Exchange 2007 The Exchange Servers will not move and still be in separate sites. There will be an 2-Way trust between domains. 1. I dont believe it would be possible to share calenders between both organazations. Would someone clarify please? 2. Would it be possible to show each organizations users in an Address Book or would I need to use contacts? 3. To keep email secure, would it be easy enough to create a TLS connection between orgs? I guess it would just involve an SMTP connector which utilised certificates? Any help would be greatly appreciated.

1. Share free/busy http://technet.microsoft.com/en-us/library/hh310374.aspx 2. You have to use some GALsync products from Microsoft (FIM) or third party quest or create contacts via script or free quest tool AD Express connect. 3.Yes, a send connector and use TLS