It would probably be of little surprise to most people to realise that this is not a blog comment declaring how great Microsoft is, but yet another rant about the rules for Microsoft Exchange. Yes, I know, it's old, it's hackneyed (the rant I mean), but still.
32kb of rules per folder? In the 21st century? Can't they at least do something like, say, give us the option to have more than one set of rules? I mean, OK the 32kb thing is to limit it to one remote procedural call (RPC). It's jargon, I don't understand it, but it may make sense. But is there a real reason why you can only make one RPC? Why not two in a row? Or five?