From: (no name) (no email)
Date: Wed Jan 04 2006 - 18:40:16 EST
Balthasar Cevc wrote:
1. Is it possible to have a server be master and client at the same
time - with the effect of being able to use 2 servers at the same time
for IMAP connections?
Hi Balthasar,
the setup at David Carter's site uses two machines: one acting as master for half of the users,
te other one as slave. The roles for the other half of users are reversed.
To make it work, there needs to be
- something telling the client where to connect
- something telling the MTA where to deliver
I am currently testing David's imapproxy changed to get user/server association from a mysql db.
Since my MTA calls deliver from a script anyway, it was no problem to obtain the correct
server for delivery from the mysql db as well.
In case of a failure, the db needs to be updated to send all users to the working server.
For recovery, as well as while redistributing users, one user at a time would be blocked
(cannot login, and mta cannot deliver) while it is synced
Wolfgang Hamann
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