On Fri, May 27 2011, Ted Zlatanov wrote:

> How do I tell Gnus that when reading mailing lists as Gmane newsgroups,
> followups to my posts should always go to the list and never to me?  I
> want to set reply-to, mail-followup-to, mail-copies-to, and whatever
> else it takes to convince the world I don't need an extra copy of their
> e-mails.  I don't know the full list of things I need to change and when
> I've tried it in the past, it always ends up disrespected by some people
> and not others...
> http://article.gmane.org/gmane.emacs.gnus.general/67258 is a good
> starting point.

You need to set Mail-Followup-To to the list.
This is done by setting message-subscribed-* variables. When sending a
message to such an address, message-mode wille set the MFU header
correctly.

I rarely¹ had problem with MFU. There's still a chance some MUA does not
respect it when doing reply-to-all or such an action, but in practice,
it worked quite well for me so far (a decade or so).

¹  I can't remember I had one actually.

-- 
Julien Danjou
❱ http://julien.danjou.info