On Sat, 04 Dec 2010 12:44:37 +0100 Bernd Petrovitsch <be...@petrovitsch.priv.at> wrote:
> C/R is only means to make it move your own effort over to others. > > The really "interesting" case is if both sides choose to require C/R > to get the first mail delivered. > Which should be a clear sign to everyone that C/R is basically a bad > idea. That's only a problem in very naive C/R systems. It can be solved by using a time-limited disposable address in the envelope "mail from". The recipient's challenge goes to the disposable address which bypasses the senders own C/R system. Some mailservers already do this because it eliminates almost all backscatter while allowing remotely generated legitimate DSNs to pass. Infuriating advocates of C/R pretty much have an answer for everything. If a benign dictator imposed a well thought-out scheme on everyone, it would probably work very well. At the moment though spam isn't that much of a problem, and C/R is more trouble than it's worth.
