Samsung GS3 (SPH-i710) exchange server repeated security update notification
Exchange is trying to apply your organization's default ActiveSync policy to your device.  More than likely, the refresh interval setting on the ActiveSync policy has a number set in hours.  Unchecking this box may resolve the issue.

We're having this issue with a couple of our Android devices after publishing a new ActiveSync policy.

Here is Microsoft's official response on the issue.