[Mailman-Users] Multiple Servers for a List?

Jon Carnes jonc at nc.rr.com
Tue Nov 19 16:02:14 CET 2002

On Tue, 2002-11-19 at 04:17, Ian Chilton wrote:
> Hello,
> I have a domain with 2 master mx servers and I want to run mailman on
> both so if 1 is down, the mailing lists still work. I have not setup
> mailman yet, but have subscribed to quite a few lists using it.
> Does anyone have a similar setup?

Most folks do this via NFS.  They setup a primary mailserver then a
secondary that only kicks in if the heartbeat of the primary is
interrupted. The Mailman setup is stored in a home directory that is
mounted via NFS to both servers.

You could do the same thing via rsynch, though you should exempt certain
directories (like qfiles and data)

> I was thinking the best way would be to alias listserv at domain.com (or
> whatever) to listserv at server1.domain.com and listserv at server2.domain.com
> so when a command (like subscribe/unsubscribe) was received, it would go
> to both.
> Then, I thought about the web interface that made me choose
> mailman....so, I wondered if the subscription info was stored in a text
> file? - if so I could do an hourly rsync of it... but this is not ideal
> as the subscription info is out of date for up to an hour (or I waste
> bandwidth doing more rsync's). Or, what if one server was down - it will
> keep trying to rsync.
> Does mailman have any features to handle this?
> If not, it should have some feature to specify a backup list server and
> whenever a change is made to a list setting, it mails the specified
> address for this backup list server to update the info.
> Also, while i'm on - we currently have the list running from mdaemon on
> a windows box (just because we never had time to migrate it when we
> switched from windows to unix a while back). I can get it to mail me
> with a list of subscribers - can I just dump this straight into the
> mailman file or do I have to manually subscribe them all 1 by 1?

You can cut and paste the email addresses (one per line) into the web
admin tool and subscribe whole lists at one shot.  You can also store
the email addresses (one per line, and *only* the email address) and
then use user_add to add the list of users to an existing mailing list.

Good Luck - Jon Carnes

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