On Sun, 11 Nov 2007, Rich Wales wrote:
> So, I would have replication set up going both directions between my two
> servers, but the sets of users handled in each direction would be
> disjoint. Each user would be assigned to one IMAP server (the master
> for their mailbox collection), and the other server would be their
> replica and act as their backup.
We do this. It is quite useful to be able to bounce users back and forth
between the two machines in a pair so that servers can be maintained
(patches, O/S upgrades, whatever) without any user visible downtime.
Three caveats:
1) It won't work with shared mailboxes.
2) I'm not running the same replication code as the rest of you (though
replication in 2.3 is based on an old version of my code). I seem to
remember Ken raising an objection when this last discussed a year or
two back now. The objection may just have just been (1).
3) Sanity checks are good:
USER dpc22
NO IMAP_INVALID_USER Attempt to update master for dpc22
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