On Wed, 7 Apr 1999, R Aldridge wrote:
> Guys,
>
> I'm considering building a replicated mail service. If the primary goes
> down for any reason (software or hardware), I need to be able to switch
> over to the backup service, simply by changing the MX. Minimal mail
> should therefore be lost or bounced and customers will not
> inconvenienced when we try to fix a disk or whatever. Is there any
> software already which will allow this to be done. I have had a quick
> scan at the qmail archives, but that didn't really turn anything up. The
> main issues are really "how to replicate imcoming messages" and "how to
> replicate POP3 transactions", though I'm sure it's a bit more involved
> than that.
replicate at the filestore level, rather than the protocol level using
something that so clustering: eg Two large NetWare servers running
Netware clustering and NFS? You then have multiple pop-servers pointing at
a different server over NFS. as they (or qmail) changes the filestore the
chnages are replicated to the other servers. A couple of 1TB Netware
servers should be able to store as much data as you require...
RjL
