Can a DLP Domain Exception list be shared

Hi SCole 

As per what I understood from your question, you are trying to manage a whitelist in one place instead of updating it all over again. Microsoft Purview does allow for unified configurations, auditing, and alerting of DLP policies across multiple workloads and channels. This means you can create a centralized list of domains and apply it across different DLP policies. You can use a common place (such as SharePoint) to manage it centrally.

Sharing Purview DLP Settings: Navigate to Purview-Settings-Data Loss Prevention Settings. Here, you can manage your whitelist and apply it to various policies. This ensures that any updates to the whitelist are automatically reflected across all policies that use it.

Some content to read : How to whitelist multiple company domains in Purview | Microsoft Community Hub

Does DLP policy rule allows to group the recipient domains? | Microsoft Community Hub