Duplicated messages sent from the list

[Ralf Mardorf]

On Monday 02 December 2013 18:47:25 Myriam Schweingruber wrote:
> Hi Bruce,
> 
> On Mon, Dec 2, 2013 at 3:20 PM, Bruce Marshall <bmarsh at bmarsh.com> wrote:
> > On Monday, December 02, 2013 02:10:05 PM Myriam Schweingruber wrote:
> >> Hi Ralf,
> >> 
> >> On Mon, Dec 2, 2013 at 10:51 AM, Ralf Mardorf <kde.lists at yahoo.com> 
wrote:
> >> > Hi,
> >> > 
> >> > sometimes I receive duplicated messages _from the list_ (no CC issue).
> >> > It
> >> > doesn't matter if I sent the mail or somebody else sent a mail to the
> >> > list.
> >> > The mails I receive two times are just one time in the archive.
> >> > 
> >> > There seemingly is an issue with the list's mailman or with my Kubuntu
> >> > Saucy's KMail.
> >> 
> >> This is not a bug in mailman nor in KMail, you just need to set the
> >> option in your mailman subscription to not receive your own mails
> >> (option "not metoo"), that's all. Currently you get all your mails as
> >> well as the one from the list.
> >> If you receive a double mail from somebody else, this person likely
> >> sent an extra copy to you and the list. Since only subscribers can
> >> post on the list, this is not necessary, so everybody should use the
> >> "reply-to-list" option only.
> >> 
> >> Regards, Myriam
> > 
> > Although what you say may apply elsewhere, I too receive on occation a
> > duplicate email...   and I don't believe it has anything to do with this
> > list or others.
> > 
> > I have noticed that when a duplicate email comes through, the SIZE of the
> > two emails are slightly different.  For example I have one here now that
> > shows 10.3KiB   and the dupe shows  10.4KiB.    This always appears to be
> > the case (the fact they are different).
> > 
> > I use fetchmail to fetch mail to my mail server and pass the emails to
> > procmail to put them into mboxes.  Then various machines pick the mail up
> > from the server using POP3.
> > 
> > One thought that has occurred to me is that somehow Kmail is picking up an
> > email before it has finished processing...   and then picks it up again as
> > a new email after it has finished.
> > 
> > It's a rare occurrence, as in maybe twice a day.   I receive less than 100
> > emails total in a day....   But with the (ungodly) methods of Akonadi and
> > all the other "resource" handling that goes on with Kmail these days, I
> > haven't bother to look into it any further.
> 
> Well, I checked your settings in mailman for this list, and you, as
> most of the users, has the settings left as default, which means you
> will receive your own mails.
> 
> Just try changing the "not metoo" flag if you don't want to receive
> your own mails.
> 
> Also, in your case, the mail header defaults to this:
> 
> Reply-To: bmarsh at bmarsh.com,
>  Kubuntu user technical support  <kubuntu-users at lists.ubuntu.com>
> 
> which means that all people replying to your mails on this list will
> also send you a copy, as requested by you. Again, this is not a bug,
> but in your settings. Change those and you will no longer receive
> duplicate mails.
> 
> 
> Regards, Myriam
> 
> PS. All this information is in the complete header of each mail which
> is in general obfuscated to make the mail nicer to read, but all that
> can be changed in your mail clients, so don't blame the list or our
> default settings. It is up to you to configure the mail clients to get
> what you want.

You do not understand. I use other mailers and are subscribed to other mailman 
mailing lists. This only happens sometimes, not always, only for KMail and 
this list.