Duplicated messages sent from the list

[Myriam Schweingruber]

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.

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