Re: High volume mail handling architecture
On Tue, 7 Sep 2004 23:48, Theo Hoogerheide <theo@io.nl> wrote:
> Try looking for a netapp or something else for central datastorage and a
> loadbalancer..
If you have a Netapp then you have to deal with Linux NFS issues which aren't
fun.
If you have a cluster of storage machines and front-end SMTP servers to direct
delivery to the correct back-end machine as well as Perdition to proxy POP
and IMAP to the correct back-end machine then you can scale easily without
dealing with NFS.
> This setup is proven to be very scalable, when you want to add another
> 20k users, just add some servers :)
You have to either be doing something very intensive or very wrong to need
more than one server for 20K users. Last time I did this I got 250K users
per server, and I believe that I could have easily doubled that if I was
allowed to choose the hardware.
I used Qmail (not my choice), Courier, Perdition, IMP, MySQL (for IMP), and
was moving it to OpenLDAP at the time I left that project.
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