I've spun up a new Zentyal Server to do this test. Here's a sample file that was generated.
https://drive.google.com/open?id=0B9YRZ_HapM6TTDYyLVB4ZWNCY3M
Just to make sure that we're on the same page - I'm using a Zentyal-to-Zentyal configuration as I think this should generate a net2net connection. I'm not sure if that's indeed true.