Scale it all. Then manage it centrally. Provision users. Manage security. etc etc.
You use much the same IOS whether you run a router for a T1 or run networks for a tier 1 :) On Mon, Apr 12, 2010 at 9:51 PM, joel jaeggli <joe...@bogus.com> wrote: > > I build basically the same mail-system where is collapsed into a single box > or spread out across a cluster. > > sendmail + clamav milter + milter graylist -> procmail -> spamd -> maildir > delivery -> dovecot imap. > > When you need to scale the front end you deploy a load balancer and fire up > more smtp boxes... > > When you need to scale the filestore you move it to nfs and divide and > conquer. > > When you need to scale imap you shift it in front of the load balancer and > deploy more boxes. > > For load balancer we used LVS back in the day. > > can replace sendmail with postfix or exim, it's mostly a place to hang the > various on-connect filter regimes. -- Suresh Ramasubramanian (ops.li...@gmail.com)
