I'm playing around with the server side API, when trying to run the the following curl request
curl -X POST \
'https://bi.tt.omtrdc.net/rest/v1/mbox/my-session-id?client=bi' \
-H 'cache-control: no-cache' \
-H 'content-type: application/json' \
-d '{
"mbox" : "server_mbox_1"
}'
The response I get is:
{"tntId":"111559067864982-4324.21_14","edgeHost":"mboxedge21.tt.omtrdc.net","content":"","sessionId":"my-session-id"}
I have a live test set up with the same mbox name but my html content is never returned in the content object, am I missing something here?

Does the fact that the test above is sitting within a web property make any difference?
Thanks
Dan