[Mailman-Users] Limit of users in a mailman list

Herman Knief hknief at auctionwatch.com
Thu Nov 9 18:35:49 CET 2000

Yes... I actually run a newsletter that has 240,000 subscribers.  Depending
on the machine you are running this on, there are some issues with LARGE
lists.  One seems to be that mailman *appears* to load the entire config DB
when you attempt to modify anything.  This means a VERY large python process
that tends to be rather slow.  I am using dual PIII 650MHz boxes and it was
quite painful.  What I would suggest is setting up an umbrella list, that
feeds several smaller lists.  It's not too hard to manage, and improves
performance dramatically.  I try to limit my mailman lists to 25,000
members.  It can handle about 40,000... but you begin to push the boundry of

 - Herman Knief

-----Original Message-----
From: Luiz Alfredo Baggioto [mailto:Baggioto at atlas.unisinos.br]
Sent: Thursday, November 09, 2000 9:14 AM
To: mailman-users at python.org
Subject: [Mailman-Users] Limit of users in a mailman list


Our institution is a university. We are using mailman for distribute 
messages for some disciplines and institutes, but now there will be 
necessity to distribute informations for all students. We thinking 
about create a list for distribute this informations for everybody - 
more or less 40.000.
My question: are there anyone using a mailman list with this size? 
Are there known problems or possibilities?
Thanks in advance

   Luiz Alfredo Baggiotto
   E-Mail: baggioto at atlas.unisinos.br
Analista de Suporte          DSI / SISCOM
Universidade do Vale do Rio dos Sinos - UNISINOS
Fone: 55 51 590-8386         Ramal: 1886

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