Sourceone Search off EmailXtender folder

Hi

Just deploying SourceOne to replace EmailXtender at some stage.

At the moment, I just have a mapped folder at the Organization level pointing to our EmailXtender archives

For permissions I gave the primary service account "Administrators" and for Domain Users "My Files"

The primary service account can search and access everything: good

When a domain user performs a Search, he cannot find anything.

If I change the permissions from "My Files" to "Owner", users can find items, but not only their own!

I have tried to change "Domain Users" to a Distribution list and even to a single user, but it is still the same.

What I am missing? In Emailxtender users can only search from their own messages. Not sure why it does not work a similar way in SourceOne when reading the EmailXtender mapped folder.

Thanks in advance