`ppe-hosted.com` is actually an US company

[DACC4]

ppe-hosted.com is defined as unkown on the map but it looks it's a US based company. Source

[fm]

Agreed. It's the MX record for Proofpoint Essentials, which is a US email security company. However, that doesn't mean they don't have an on-prem Swiss server behind it, since Proofpoint will only scan for threats and then pass along to the actual mail server.