Re: MTS transparency and anonymity

> > > I agree that it is wrong to reject null return paths altogether. However
> > > your suggestion is incompatible with backscatter detection systems (such
> > > as BATV or Signed Envelope Sender) which assume that null return paths are
> > > only used for bounce messages.
> >
> > those systems are operating on false assumptions.  it's never been the case
> > that <> was limited to bounce messages.
> 
> Yes. It'll be interesting to discover the extent of the interop problems :-)
> 
> I think we're going to have to tighten up the rules about null return
> paths and bounces, because of the backscatter problem. 

could you explain the backscatter problem?  I'm not sure what you're referring
to.

Keith