🚀 go-pugleaf

There was a period of time long ago during which I found that one or
two intermediate UUCP sites were mangling From: headers quite badly.
During that period of time, I found it convenient to tell MH to send
replies to the return-path field.

Even today, there are a few sites that will change a fully-qualified
domain-form From: address into bang-path form.  Other sites will
happily prepend their name to this bang-path.  Yet others *won't*.  The
final result is what looks like a complete bang-path, but it has some
names missing in the middle.  At that point the mail bounces with
"unknown UUCP host".  (And we started with a nice FQDN, which is
supposed to be Immutable and Always Replyable.)

The reply-path seems to be usually much better behaved.

Fortunately I haven't found it necessary lately to use the reply-path
for replies, but I can see why some people might.
-- 
Rahul Dhesi <dhesi@cirrus.com>
also: dhesi@rahul.net