Hi,
We are having issues with with Activesync, every so often the w3wp.exe process takes up most of the cpu and mobile devices either stop syncing all together or become very slow to collect email. I have gone through everything that I can find and have hit a dead end in my quest for answers. When it happens I can fix it easily by either performing an IIS reset or killing the process.
Most of what I have read points towards one of the mobile devices hitting the server to often pointing to an issue with that device. I have gone through all of the logs as suggested but I need to know how often is to often. I know which devices are hitting the server most often so do I just assume that these are the problem.
Even if I know which devices are the problem how do I go about fixing them so that they no longer cause issues. Simply blocking them from the server is not an option as they need to collect their email on their mobile devices. Also If a user has more than one device do I combine their hits on the server or is the amount of hits on a per device basis.
Do the size of users mailboxes or number of object effect this.
In the organisation we have iPhones, iPads and Windows phones.
Thanks for any help in advance, let me know if I need to collect any more info.
Cheers.