🚀 go-pugleaf

     Errors-To: is completely unnecessary if SMTP is correctly implemented.

I will disagree strongly on this point.  Having seen any number of complaints
about mail not going through from some individuals, i can definitely see the
utility of such a field and have been tempted on at least one occasion to
put a hack into our mailer to insert this sort of thing under certain
circumstances.  (I bet MRC might even know what/who i'm talking about).  At
least some naive users might be better off having errors go to someone who
knows about such things (rather than just being deleted, which is what happens
all too often).

Where Errors-To: would be most useful is where a message leaves the SMTP world.  

    ... useless bug reports.  It has gotten to the point where posting a dozen
    messages to one of the mailing lists I maintain produces over a
    megabyte of mis-addressed garbage; I've started getting complaints
    from subscribers because their (de)subscription requests are getting
    lost under all this junk and thus being accidently ignored.

I think SRA is right.  There is a problem here and the wider netmail goes,
the worse it's going to get until this get addresses.  (Now, as i send this,
i fully expect to get numerous pages of useless crud dumped into my already
grossly overbloated mail file!)
						-- Tovar