Internal traffic will go through ZS if it is on a different subnet/VLAN, which it is. In my case, I have 5 interfaces, and 17 VLANs (and yes, there are reasons why I have 17 VLANs).
I am trying to access from 10.1.2.0/24, and the servers are on 10.1.10.0/24.
I believe if I could get ZS to use our internal DNS server that this would probably work just fine, but I don’t know where ZS gets it DNS info from (or how to change it to point to a different DNS server). I tried changing /etc/resolv.conf, but it didn’t seem to work.