I flashed the RUU not long ago and there was no proxy.
It only had the following differences - authentication: chap and apn type: default,hipri
Also mms was using telstra.wap instead of telstra.mms = still works so I never bothered changing it.
My stock phone has no proxies and also has telstra.wap in the mms apn. Came out of the shop that way and works fine