We have been using Zimbra for over 3 years and love it.... But we have had some issues lately! We have Zimbra Pro 5.0.9 running on a Ubuntu 6 Server.
iPhone issues we have experienced has not also been an Zimbra issue. Such as now being limited to only one Exchange account after the iPhone 2.1 updated. Also we have looked high and low for a way to share calendars and view tasks via the iPhone. We have a owner who gave his wife an account on the Zimbra to share his calendar and her home calendar. While they have Admin permission on each others cals they can't edit, add or change except from the Zimbra Desktop or Web. By the way neither of them like to ZD or online version and use Outlook '07 and iPhone MS Exchange.
We are looking at Toodledo but will cost him another $625 year just to manage tasks. He just signed a 3 year Zimbra Contract and is not very happy that he can't use what he already has!! He has also asked about Kerio MailServer.
I do not want to leave Zimbra but I also don't what to lose a customer.
ANY SUGGESTION PLEASE