There is a user on our domain that does not receive drop box share emails (from no-reply@dropbox.com). This works fine for other users, but not for REMOVED
When I checked our mail security platform, there was nothing that was blocked. Further, the user can receive emails from other external emails just fine. If, for example, I send to REMOVED, which does not exist in our system, I see the blocked email in our mail security. It seems like [email removed as per Community Guidelines] is blocked on the dropbox side of things.