I have a Small Business Server 2008 running Exchange 2007 in domain called "ABC".
Due to the limitations on Small Business Server 2008 we are unable to create a trust relationship to another Windows 2008 DC in domain called "DEF"
We would like to move mailboxes from the Exchange 2007 platform (domain ABC) to the other Exchange 2010 platform. (domain DEF)
Please can you advise how best to do this ? I understand there are several ways, we have approx. 70 users to do with the mailbox database around 140GB.