There are 2 trusted domains using exchange 2007, 2003 and 2000. when a user from domain 1 send a meeting request to a user in domain 2, in free busy, it says no information available. Information is available to users in the same domain. Is it possible to have this info available between domain? 2. when a user in domain 1 send a message with voting buttons, these get lost. It works for users in the same domain. Is it possible for voting buttons to work between domains?

Hi, For free/busy information between domain, u can deploy Federation server, detail Here is a paragraph I read: "In Exchange 2007, you could share calendar data with other Exchange 2007 organizations. Doing so meant that your CAS servers had to talk to their calendar servers, and the controls around it were not that granular. In order to do it, you either needed to establish a forest trust and grant permissions to the other forest’s CAS servers (to get detailed per-user free/busy information) or set up a separate user in your forest for the foreign forests to use (to get default per-org free/busy data). You also have to fiddle around with the Autodiscover service connection points and ensure that you’ve got pointers for the foreign Autodiscover SCPs in your own AD (and the foreign systems have yours). You also have to publish Autodiscover and EWS externally (which you have to do for Outlook Anywhere) and coordinate all your certificate CAs. While this doesn’t sound that bad, you have to do these steps for every single foreign organization you’re sharing with. That adds up, and it’s a poorly documented process " http://blogs.3sharp.com/deving/archive/2009/08/21/some-thoughts-on-fba-part-2.aspx It points off to this topic about the Availability service. http://technet.microsoft.com/en-us/library/bb125182.aspx I don't have any idea about voting buttonRipu Daman Mina | MCSE 2003 & MCSA Messaging

Hi, In order to handle the issue in more effectively, I suggest we work the issue one by one. For the first issue, please help me clarify the following questions: 1, What's the version of Outlook in Exchange 2007? Are the Exchange 2007 and Exchange 2003 in domain 1? 2, Are the users in domain 2 experiencing the same issue when viewing the user's free/busy of domain 1? 3, Did you check the issue in OWA? Thanks Allen