If I'm understanding this right, does that mean there is no way to force a user to use a GC in their own site? For example:
Lets say we centralized Exchange and consolidated to a couple of Exchange servers in Site A (Chicago). The users are in Site A of course, Site B (NY), Site C (Miami), Site D (L.A.), and site E (Denver). All sites have a GC, and all the users and servers are in the same domain (although not a single domain organization due to an empty root domain, for all intents and purposes it acts as a single domain. )
Obviously we would like a user in Miami to normally hit the GC in Miami, but it sounds like they will instead always hit Chicago. I understand that since the user has no IP address it would be hard to determine their site... :) but is there no way around this?
In any case thanks for the article, this blog really is great for learning stuff I'd probably never know otherwise...