By Nuno Mota, MSExchange.org
Creating Custom DLP Policies
In the first part of this article we say how to create a DLP Policy based on Microsoft-provided templates. Another option is to create an empty policy, known as a Custom Policy.
In the Exchange Administration Center [EAC], navigate to Compliance Management\Data Loss Prevention. Click the arrow that is beside the + icon and select New custom policy.
On the New custom policy page, complete the following fields:
Click Save to finish creating the new policy. The policy is then added to the list of all policies that we have configured, but because it has no rules associated with it, it will not do anything.
Double click the policy you just created or select it and click the + icon in order to edit the new policy. On the Edit DLP Policy page, click Rules.
To read the full article, please go to: MSExchange.org