I've recently purchased and HTC One-X and I'm running Zimbra 7.2
I setup the native email app to using Activesync. Everything seems to work fine, calendar, tasks, and email sync with out issue. If I set my setting to download past mail to ALL it starts to download a few messages (4) then it refreshes and goes back to 1. Needless to say, it doesn't sync all my mail. I have around 200 messages to sync.
Now if I set the Download Past Mail to 30 days it works with no issues.
Any thoughts on what I can try?
I'm not sure if this is a zimbra issue or not, but I thought I'd start here.