Josselin Mouette <joss@debian.org> writes: > Most of them, actually. And there's no reason why the others should > support such a non-standard header. It should be X-Mail-Followup-To, to > begin with. Not in the RFC 2822 era. The "X-" business was removed. -- Russ Allbery (rra@stanford.edu) <http://www.eyrie.org/~eagle/>