Current issues with Microsoft Exchange ActiveSync and third-party devices

Microsoft tracks specific issues with mobile devices that use ActiveSync.

See Current issues with Microsoft Exchange ActiveSync and third-party devices. (Article ID: 2563324.)

Why all Exchange ActiveSync experiences are not the same… and how to know what you are getting

See http://blogs.technet.com/b/exchange/archive/2010/07/15/3410397.aspx.

Apple.com: iPhone Support Enterprise page

http://www.apple.com/support/iphone/enterprise/.

Apple.com: Apple Enterprise Support for Exchange ActiveSync and iOS

Apple Enterprise support is available via an Enterprise Support Agreement, as per the above link, or via a Cross Platform and Command Line Interface PPI (pay per incident).

See http://www.apple.com/support/products/pay-per-incident.html.