Fwiw, I find the "deduping" that many mail systems perform these days as
most unfortunate.

If I'm a subscriber, I want my file (folder, label) of distributions on
each of my subscribed lists to be a complete record of the distributions of
that list.   If someone posts to 4 lists (of which I'm subscribed), I want
*my copy* of those archives/folders to be complete.   If I notice that post
in my list A folder, but not my list B folder, did the poster decide that?
Why were list B subscribers left out(they weren't, perhaps)?

Oh well, I'll never win that battle :-(

Cheers, Wayne

On Thu, Sep 25, 2014 at 4:04 PM, Reed Farnsworth <
[log in to unmask]> wrote:

> This is all good information. Thanx!
>
> The customer that brought this up pays more attention to some lists than
> others. In this case, the email went to a list he considers less important
> and didn't show up in the list he considers to be important.
>
> We have one list that most customers look to as being more urgent than
> others. Maybe I'll try sending that one by itself, and all others in one
> batch. In that way, it may be that they'll get two, with at least one being
> the one they pay more attention to.
>
> Thanx again for all your great feedback!
>
> Reed
>
> ---
> REED J. FARNSWORTH | Knowledge Base Analyst | SirsiDynix
> P: 800.288.8020 ext. 5483 | F: 801.223.5202 |
> [log in to unmask]
> www.sirsidynix.com
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>
>
>
> -----Original Message-----
> From: LISTSERV Site Administrators' Forum [mailto:
> [log in to unmask]] On Behalf Of Valdis Kletnieks
> Sent: Thursday, September 25, 2014 12:28 PM
> To: [log in to unmask]
> Subject: Re: De-duping between lists
>
> On Thu, 25 Sep 2014 17:58:56 -0000, Reed Farnsworth said:
>
> > Is there some sort of de-dupe process that recognizes when a recipient
> > is on multiple lists and only sends them the notice on one of them? If
> > so, is there a way to control it, like give lists preferences, or turn
> it off?
>
> Usually done by the recipient's mail system, by only accepting the first
> copy of a mail with a given Message-ID: header
>
> > Is this because I included all of the lists in the TO: field?
>
> Indirectly, because it left your MUA as one message, and as a result all 4
> lists got copies with the same Message-ID.
>
> > If I send a separate email to each list with only one list in the TO:
> > field, would that help them all get through?
>
> Umm.. they most probably *did* get through.  Or did you *want* a recipient
> who's on 4 lists to get 4 duplicate copies?  That tends to make for cranky
> humans.  Is there an actual use case where not suppressing duplicates is in
> fact a good idea?
>
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