List memberships and duplicates [was Re: Yay, now I need some Osborne boot media!]

John Robertson pinball at
Mon Dec 1 13:42:05 CST 2014

On 12/01/2014, 10:31 AM, Peter Coghlan wrote:
> On Mon, 24 Nov 2014 13:28:05 -0800 Chris Osborn <fozztexx at> wrote:
>> On Nov 24, 2014, at 1:14 PM, Mouse <mouse at Rodents-Montreal.ORG> wrote:
>>> Me too.  I tried unsubbing from cctech and was told I wasn't
>>> subscribed.  So I've just left it, figuring Jay has bigger fish to fry
>>> for the moment - if it really bugged me I'd procmail the cctech copy to
>>> /dev/null.  If it's still going on whenever it seems to me it's worth
>>> mentioning again (a month? two?), I may see if Jay has the spare cycles
>>> then to deal with it.
>> I’ve been getting the duplicates too and also haven’t said anything for the
>> same reasons. I did check the “List-" headers to see if I was getting a copy
> >from cctech, but it’s not coming from there. I suspect what’s happening is
>> the cctech is forwarding to cctalk, or has cctalk as a subscriber, and the
>> cctalk list is not checking or storing the Message-ID to prevent duplicate
>> messages.
>> Like you, I’m not an expert on mailman. The last time I ran a mailing list
>> I used procmail’s SmartList.
> I am still getting duplicate mails.  To recap, I am subscribed to cctech and
> one copy of each duplicate is arriving with a cctech From: address and the
> second copy is arriving with a cctalk From: address.  I have tried to
> unsubscribe from cctalk but I never receive the email asking me to confirm
> I wish to unsubscribe, suggesting that I am not subscribed to cctalk.
> There have only been a few responses to this thread so it appears that either:
> 1) There are very few people experiencing this problem.
> or
> 2) All cctech subscribers are experiencing it and very few find it a problem.
> or
> 2) All cctech subscribers are experiencing it and there are very few people
>     subscribed to cctech!
> It doesn't look like this is going to be fixed quickly so I decided it's time
> to do something before talk of cooking the Thanksgiving turkey turns to talk
> of cooking the Christmas turkey.  I decided that if I unsubscribe from cctech
> and subscribe to cctalk, even though I will still get the off-topic stuff, I
> should get a lot less mail because the on-topic stuff should only arrive once,
> which is definately an improvement and will do for now.
> In case I might miss anything important, like someone offering a free IBM 3420
> on my doorstep, I decided to subscribe to cctalk first, wait until I start
> getting three copies of everything and then unsubscribe from cctech.
> So, I subscribed to cctalk (with the same address I use for cctech which on
> reflection may not have been a good idea), replied to the confirmation email
> and then received the "Welcome to cctalk" email.  However, I have not started
> getting three copies of anything.  Everything is very much as before, one
> copy from from cctalk and usually another some time later from cctech,
> presumably after moderator approval.
> I thought I was on to something when one message arrived twice from cctalk and
> twice more from cctech but then I found that it appears to have been sent to:
> On-Topic Posts <cctech at>, General at, and Off-Topic
> Posts <cctalk at>
> so it's arrival here four times is consistent with previous behaviour.
> So what next?  I get the feeling that if I unsubscribe from cctech, I will
> stop receiving anything at all and if I unsubscribe from cctalk, nothing will
> happen.
> Any suggestions?
> Regards,
> Peter Coghlan.

Your report matches my situation...I can't unsubscribe though, and - not 
interested in losing everything - have decided to live with the double 
posting until the moderator can sort out the problem and make an 

John :-#)#

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