Thanks for the replies, I'm not quite sure that I'm outlining the issue properly.
So beacons are configured correctly DNS is working ok. This issue is that VDI's with receiver/workspace installed in them is doing beacon probing at all. Because we have SSO enabled and stores configured within the VDI's to launch xenapp resources from inside a VDI instance I know why its doing it, but the process is unnecessary within a VDI itself.
From what I can see receiver is pinging/contacting all 3 configured beacons at the same time so its not doing something sensible like probing the internal URL's and if getting no response then probing the external URL's.
So if we have the external beacons set to
ping.citrix.com and
google.com for example the networks team are complaining that receiver is probing those resource at all.
What I would like to do is disable beacon probing entirely in receiver or getting receiver to assume its always inside the network on the VDI's.
As beacon probing is set at a storefront server level and not per store I cannot create dummy enteries there as the same storefront instances are utilised for external connectivity and internal load balancing
I'll probably just end up changing the hostfile on the VDI's to stop them hitting those locations but if there was a reg key solution or somthing that would have been handy.