I just set up a temporary account on testzimbra.com to look at the software. One of the things that I need to do is play with the syncing between Zimbra and iPhones.
I believe I followed the instructions in the wiki correctly:
IPhone - Zimbra :: Wiki
The welcome email in the test account says that ActiveSync is enabled, but my iPhone says "Exchange account verification failed".
How can I determine where the problem lies? Or is it possible that Zimbra Mobile is actually not turned on at testzimbra.com and the email just hasn't been updated?