I'm looking for resources for the AirSync protocol for Exchange (general or even better if specifically targeted at .NET). It seems strange that it can't be found anywhere on the net.
I know it uses WBXML for parts of its communications, but that as far as I got.
I know a certain amount about AirSync/ActiveSync :)
There are various open specifications you can download. There's a lot to wade through, although I think only the MS-AS* documents are relevant.
Are you planning to write a client or a server?
You should be aware that the various different devices which implement the protocol as clients behave in somewhat different ways...