Our Business has currently bought another company's business and our IT is in charge of both environments. Is it possible to setup both company's exchange servers to share calendar information between the two??? One company has Exchange 2003 and the other has Exchange 2010. Both have the latest Service Packs and updates. Thanks for any help!!!

This article should explain it to you. http://technet.microsoft.com/en-us/library/dd638083.aspx Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Hi, you can use IORepl tools. http://blogs.technet.com/b/exchange/archive/2011/03/28/iorepl-and-exchange-2010-sp1.aspx Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi, You must create Trust Relationshiip between two Forest. In Short You Must Setup Exchange Cross Forest Migration

Hey thanks guys!!! Sorry for the delayed response! I am going to give it a try this week hopefully!!!