[Mailman-Users] a question about umbrella lists

Jon Carnes jonc at haht.com
Tue Nov 20 19:37:55 CET 2001

This question should be in the FAQ.  It is certainly in the archives enough.

Umbrella list don't do what you are looking for. Look through the archives
and you will find a nice little script that does exactly what you want.  The
script uses the ~mailman/bin/sync_members to move users from various other
lists into one super list.

In your case, list out the users of vox to a file, then append the users of
vox-tech to the same file. Now feed that file into sync_members to
create/update the list vox-announce.  This will populate vox-announce with
all the users of your other two lists, and Mailman will automagically toss
out any duplicate entries.

Run the script out of cron every hour and you'll be in good shape.

Jon Carnes
----- Original Message -----
From: "Peter Jay Salzman" <p at dirac.org>
To: <mailman-users at python.org>
Sent: Tuesday, November 20, 2001 1:15 PM
Subject: [Mailman-Users] a question about umbrella lists

> hi all,
> my linux user group runs 3 mailing lists: vox, vox-tech and vox-announce.
> i would like all subscribers of vox and vox-tech to also be subscribed to
> vox-announce (which only officers can post to).
> the trouble is, if vox-announce is an umbrella list for both vox and
> vox-announce, then people who belong to both vox and vox-tech will get two
> copies of any posts that i make to vox-announce.
> is there a way of suppressing these duplicate messages?
> some people like to subscribe only to vox, some only to vox-tech and some
> both vox and vox-tech.   but in all of these cases, they should only
> one copy of an email sent to vox-announce.
> can this be done with mailman?
> pete
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