One of the common issues that appears when integrating a hybrid vision of Hosted Exchange with someones existing infrastructure (so not really Hosted Exchange at all!) is synchronising credentials between the Exchange Server and the local machines or for the more tech savvy the 'hackiness' of having disparate forests. Cross Forest trusts are a possibility and merging one with the other (i.e having the Hosted Exchange solution bound to the existing domain) is another but there are many issues with that (mostly political). What I intend to do is utilise the 'Branch office' concept that ...