Greetings!
We have recently upgraded our Zimbra server from version 7.x.x to 8.6.0_GA_1169.NETWORK. Immediately following the upgrade all of our iPhone users stopped syncing with their accounts. These phones are all using ActiveSync. The fix for this was easy enough in that we simply turned off the syncing on the phones and then restarted it. This method completely restored all but one of the phones to working order. The last phone, however, is giving me some trouble. The phone is syncing all email without any problems. The calendar and contacts are only pulling in about half or less of what is showing in his account. Everything was syncing perfectly before the server upgrade, and our other iPhone users are syncing well after the upgrade. I am not sure where to begin troubleshooting this issue, so any suggestions would be welcome. This account is one of our busier accounts, so there are a lot of appointments and contacts to sync. It doesn't help my position that this account belongs to our President and CEO! :-)
Thanks!