how to use a mailing-list

[Bruno Wolff III]

On Sat, Apr 07, 2012 at 18:21:09 +0200,
   Reindl Harald <h.reindl at thelounge.net> wrote:
>
>because i get often enough mails twice as reply
>and i can not remember that i configured anything
>in a way imply that i want this

I already told you how to do that. You either have your email client
send a mail-followup-to header or you set your preference for the 
list to not send you a copy when your email address is listed in 
the recipient headers. For the latter go to: 
https://admin.fedoraproject.org/mailman/listinfo/users 
And then enter your email addess by the "unsubscribe or edit options" 
button and then hit the button.

>register on a mailing-list usually means people
>are sending and replying to the list-adress and
>that there is no reason for "reply all"

As was previously explained, not every message to mailing lists is 
sent by someone subscribed to the list. There are also reasons 
(latency is one, filter triggering is another) to want to get copies (or 
at least have recipient headers list your address explicitly) both through 
the list and directly.

>there is no "i want mails twice" setting
>so nobody can imply "reply all" is the right action

Yes there is.