Just to be clear, this affect only read and delivery receipts - Non delivery receipts will always be presented. In 4.0(1) and later you can dictate that these NDRs be offered at the "bottom" of the message stack but they'll always be there.
I am dealing with the exact same issue. I am not sure exactly where you are finding this information. Can you please be more specific, on the location of the 'Exclude return receipts from voice mail stack'.
You didn't note your version of Unity but if you're running 4.0(3) or later you should see the "advanced settings tool" in the Tools Depot application right off your desktop. You can get an updated version of the Advanced Settings Tool off www.CiscoUnityTools.com, however that option for excluding return reciepts has been in there for some time.
I am running unity 4.0.3 with domino 6.0.2. I have set the option in the advanced settings tool for "exclude return reciept from voicemail stack" to 1 and restarted unity. However when I get a RR in my inbox unity is still reading it to me. I even disabled the AVTTSSVR service.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...