I have having difficulty fully syncing my zimbra work account with my Droid Pro. I can sync the email account to receive and sent my work emails, however when I select new emails and respond to them on my Droid it does not register as read and replied on my computer and vice versa.

For example, if I don't check my email on my phone all day, but have on my computer during the course of the day, my phone says I have the day's worth of unread messages even though I have already read them on my computer.

Am I missing something to sync the two completely? Thanks!