Symantec Data Loss Prevention supports metadata detection for servers and endpoints.
Symantec Data Loss Prevention provides a utility program called filter that you should always use to verify file format metadata support.
Using this utility helps you determine the metadata the system extracts for a specific file format.
Once you have verified metadata extraction for the desired file format or formats, you can enable metadata extraction and implement policies to detect file format metadata.
Refer to the online help pages to understand metadata detection and how to use the filter utility to verify metadata extraction.
For DLP 16.0 use these links and their child links.
Supported file formats for metadata extraction
This link has child links for enabling metadata extraction servers and endpoints.
Best practices for using metadata detection
This link has child links for using the filter utility and other configuration tuning options.