On Barracuda Email Security Gateway's Privacy Page you can request and collect all the privacy and GDPR related information that Barracuda Email Security Gateway is providing.
The privacy policy by is a legal document or statement that discloses how Barracuda Email Security Gateway gathers, uses, discloses, and manges their customers' data.
The basis for Barracuda sharing, adding, uploading, hosting, accessing or sending personal data out of Europe. Vendors can also add a description of their own impact assessment for data transfers.