A couple of problems that SharePoint Server Administrators regularly encounter are:
(1) How can I know when an extranet user from a partner company leaves the company, and
(2) How can I avoid accumulating inactive accounts for users that no longer exist, which are just "sitting out there?"
Unfortunately, it is nearly impossible to keep up with the "comings and goings" of extranet users who are employees of partner companies.
But Extranet Collaboration Manager 2013 (ExCM) contains within it the capability of helping our clients with specific extranet user security needs like this.
The ExCM User Automation (UA) feature can be used to apply recurring policies to accounts residing in the ExCM user database. These policies are applied by a SharePoint Timer Job, which periodically inspects each account. UA can be used to expire user accounts based on attributes such as periods of inactivity or failure to update their password within a specified period, solving the problem of user "housekeeping."
You first need to enable the SharePoint Service object, which is used to provide farm-wide services and configuration data. To activate the service, open the SharePoint Management Shell and typed the following command: