Is is possible to share a Mailbox (Calendar) with full permissions with two Exchange 2007 server in to different organizations (forests)?
I have a situation where a new employee (UserB2) in a different company (Company B) must have access to a someone's (UserA1 in Company A) Exchange Calendar for editting purposes. Both environments are running Microsoft 2008 and Exchange 2007 server and Outlook 2007 or 2010. I need UserB2 to be able to add, edit, and delete items in UserA1's Exchange Calendar. Has anyone done this? If so how? Thanks,
July 29th, 2010 6:46pm

Use Outlook 2010. It can connect to two different Exchange orgs at the same time. The user will require an account in the second domain to authenticate with. Simon.Simon Butler, Exchange MVP. http://blog.sembee.co.uk , http://exbpa.com/
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July 30th, 2010 1:44am

Hi cadamsanders, Sure, it is impossible to use your own forest domain account to edit and do other operation to the other forest account's calendar. Between the forest, just the free/busy information could be shared, and the calendar detailed information and other feature could not be operatored. Sembee gave a good way, you could have another account which in the other forest. May be federation could achieve your target, refer to: http://technet.microsoft.com/en-us/library/dd638083.aspx Regards! Gavin
August 3rd, 2010 1:08pm

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