Comments on: Exchange 2007 ActiveSync reporting

By: Dan Kempka

Dan Kempka — Mon, 21 Nov 2011 20:03:56 +0000

We have four iPhones, and four iPads. We also have at least a dozen Android phones, but they don’t seem to create the excessive log file entries that I’m seeing from iOS devices. All of the iOS devices are running the very latest version of iOS 5. I saw the first large jump in IIS log sizes last April when the files went from 20mb per day to over 150mb. Then the files dropped back down to the 20mb range in late July. In early September, the log files jumped back up to over 150mb per day, then dropped for a few days in November, then exploded to over 1gb currently. I’m guessing that Apple’s implementation of Exchange ActiveSync is the culprit, but I have no way to tell if that’s true…

By: Ratish Sekhar

Ratish Sekhar — Mon, 21 Nov 2011 19:55:30 +0000

I have seen a behavior in the past which did something to a user’s iPhone which made IIS logs grow 10mb per minute….
I had her update the iOS to the latest version…

1.2 GB Log files are a lot… how many devices do you have in your company?

Ratish

By: Dan Kempka

Dan Kempka — Mon, 21 Nov 2011 19:44:06 +0000

Ratish, thanks for your excellent posts. I stumbled upon a mystery last week that has me perplexed. The w3svc1 ActiveSync log files for our Exchange server 2003 jumped from approximately 20mb per day, to over 1.2gb per day for the past four days. My review of the log files show that our iOS devices (iPads and iPhones) are registering thousands of log entries per minute. Have you seen this behavior elsewhere?

Dan Kempka

By: Ratish Sekhar

Ratish Sekhar — Mon, 24 Oct 2011 12:47:51 +0000

Why are the log files empty? Are you looking at the right IIS log files? Parse it and look for HTTP 500 errors…
You simply might need one more CAS server to handle the load…

By: zulma

zulma — Fri, 21 Oct 2011 23:25:37 +0000

Dear Ratish, reading your post has been very helpful, i work in a large enviroment,we have 4 CAS and 4 HUB, Exchange 2010 SP1, windows2008 server, when we retrieve the Active Sync logs, they are empty?
we are having problems with iphones and ipad, it is intermitting, they just simple time out and the devices stop syncing. Any ideas on how to retrieve this logs?

any help would be greatly appreciated.

By: Frode

Frode — Tue, 27 Sep 2011 13:37:02 +0000

Found it! Just enable the bytes sent/received fields on the IIS site.

Could be a good idea to store the logfiles og a seperate drive..

By: Frode

Frode — Tue, 27 Sep 2011 13:10:02 +0000

Hi!

On all my ActiveSync Users I get “Total Bytes Received = 0″. Do I need to enable this logging attribute or is this a bug?

“Total Attachment Size” shows correct.

Frode

By: Ratish Sekhar

Ratish Sekhar — Tue, 20 Sep 2011 17:56:04 +0000

@Dan – please refer to: http://msexchangeguru.com/2011/07/14/outlook-meeting-vanishing/

By: Dan

Dan — Tue, 20 Sep 2011 17:53:39 +0000

Ben,
We are also having trouble with calendar appointments on iPhones, have you found a solution?

By: Ben

Ben — Wed, 08 Jun 2011 09:50:04 +0000

Hi Ratish.

We are having problems with ipads that are deleting calender appointments on its own acccord from the exchange server. I have enabled advanced logging on the “microsoft-active-sync” and i am using your commands above to show me the log files. But im not finding anything in regards to errors and the like.

Any ideas how i can troubleshoot this further?