If you use procmail and process list mail separately, you can easily add a reply-to header yourself. Then all mail clients will behave as you expect without the need to change how the list itself works.
:0 * ^List-Id:.*sane-devel.www.mostang.com | formail -a "Reply-To: sane-de...@www.mostang.com" \ | rcvstore +Lists/SANE -- Dave Close, Compata, Costa Mesa CA "You can't go to Windows Update d...@compata.com, +1 714 434 7359 and get a patch for stupidity." dhcl...@alumni.caltech.edu -- Kevin Mitnick