[GENERIC] Note to posters

Please note that this list does not automatically set the "reply-to"
header. That means that when you just hit "reply", chances are you are
posting to the previous poster personally, not to the list.

I personally find this a bit of an annoyance, but the listmasters may
have their reasons for having it this way.
I'm also not a list expert, so I might be missing some simple
configuration in my mailer.