I had nothing but problems with Palm OS and Versamail EAS syncing with Zimbra. I still have two people that are using Palm OS and the only problems I'm currently having is that immediate delivery of mail does not seem to work. I've moved all my other phones with WinMo 6.1 and they all work without any issues. I've offered my Palm OS people new phones, but they don't seem to want to move at this point.... so <sigh> I guess I'll keep waiting.
Release 6.0.2_GA_1912.UBUNTU8_64 UBUNTU8_64 NETWORK edition + Mobile Option
Activesync with Moto Q9C, HTC Touch Pro, Palm Pro, & Palm Pre