Not 15 minutes later, a user came in to my office saying his Calendar wasn’t syncing on his Montorola DroidX any longer.  After a little research, it turns out the last successful sync was minutes before the SP1 installation completed.  Other iPhones and SmartPhones seemed to working.  For reference, he was running the native ActiveSync version 2.2.1.  Again, there were lots of postings regarding this issue, but here is how we solved ours:

OUR SOLUTION

1.  I was able to make a test “Exchange ActiveSync Mailbox Policy” under ORGANIZATION CONFIGURATION>CLIENT ACCESS. 

2.  Then I set the Exchange ActiveSync properites under the Features Tab of his mailbox to use the test policy created first.

3.  Then I had the user delete his Exchange Account and recreate.  Because this is a sycronized copy, the user should not lose any information. 

Becausse this worked, and I couldn’t find any differences between the default policy and the test policy, I recreated the default policy.

Constant polling in Push mode

The first thing we detirmined was that the phone was constantly polling the exchange OMA (Outlook Mobile Access) website of the exchange server.  This was both visible and audible if you are near a set of computer spearker that can pick up the iPhones RF.  Switching the ActiveSync mode to Fetch, did indeed resolve the battery issue, but it simply masks the problem.  If you are an Exchange Administrator or have a good relationship with one, you can verify this is an issue by checking the Excahnge OMA website logs in iis.  These are difficult to read, but for a medium sized business, you’ll see a noticable increase in the traffic to that website, as the iPhone polls iis constantly.  This might also be noticalbe in Firewall https logs.

Resolution

We found the problem to be caused by a corrupt “Meeting Request” in the users mailbox.  The phone was not able to open this and process automatically, thus causing an error and the ActiveSync polling to restart.  No other functionality seemed to be impared, only that ActiveSync push would constantly fire, due to an inability to sync all mail items. 

1) To eliminate it, we sorted the Users Inbox by Type in outlook. 

2) We then deleted all the meeting or calendar mail requests. 

3) Empty the deleted items as well to completely remove the corrupt invititation.

4) Deleted the iPhones Exchange Account, recreated it, and let the mail sync up.

Once you delete the account, you can recreate it using the AT&T infomration below.  No data will be lost, as this is simply a syncronized copy of the exchange server.

AT&T Support On-Line