Experts: About 1 week ago, SOME of my client users (Exchange SP2 on SBS 2003) started having problems sync'ing their iPhones using ActiveSync.
Basically, several users can sync fine using their 3G iPhones, and e-mail flows into their iPhone mailboxes nearly instantly. However, 3 other users (all company VIPs) suddenly started having the very annoying problem where their new mail would only dump into their iPhone inbox (via ActiveSync) every 4-12 hours....and there is no other way to get it to come in at all. I am able to mimic the most dependent iPhone user's sync issue on MY own iPhone (same model), and the EXACT same thing happens to me, so I know that it's not a device issue. What I have noticed when testing his account on my iPhone is that the mail app tries to connect to the server every 5-10 seconds, but doesn't bring in any content during those checks...it's almost as though that check is failing hundreds of times per day, and every so often, it will get through.
I have already followed Method 1 in the MS KB article "How to reset Virtual Directories..." here:
, and I also re-ran the Internet Connectiion & Email config Wizard in SBS2003, but neither yielded a better result...both to no avail. I still cannot receive mail on demand testing with the CEO's affected mailbox.
Again, this problem is with just a few mailboxes using ActiveSync, while others have no such problem(s).
Thank you in advance for your help!