Are you just running one machine with mailboxes, or more than one?
I would definately want to be able to add more servers (in fact, I'd
probably want to start with two) to distrubute the load - I eed to
figure out how to either split up the mailboxes (and have some sort of
proxy transparently connecting users to the right machine), or of
sharing the mailbox space between them (NFS.. Ugh.. But what else is
there that is production ready?)
On Fri, 30 Mar 2001, Michael J. Tubby B.Sc. G8TIC wrote:
>
> >
> >
> > On Fri, 30 Mar 2001, Jeffrey Goldberg wrote:
> >
> > > On Fri, 30 Mar 2001, Dave C. wrote:
> > >
> > > > I need to re-implement an ISP mail system for 20,000+ users, I need to
> > > > suppport both POP and IMAP, need a good webmail solution, and also
> need
> > > > this to be scalable as the userbase grows.
> > >
> > > There is a new O'Reilly book on managing IMAP which discusses all of
> these
> > > issues (and describes lots of things that one can do with IMAP, and how
> to
> > > actually do them with both cyrus and UW).
> >
> > Is the title "Managing IMAP" ? Or do you have the ISBN or something? I
> > may have a look for this. (I'd have to find it in a local bookstore
> > rather than online as I do not use credit cards)
> >
> > I'va also had a look a Courier-imap/sqwebmail. Anyone have an opinion on
> > that?
> >
>
>
> I implemented Courier IMAP about 8-9 monts ago and have found it to be
> excellent. Courier-IMAP beats WU-IMAPD every way you look at it....
>
> - Maildir is a much better format for storing messages (fast, efficient,
> etc)
> - Courier-IMAP has a small footprint (as claimed by the author) - memory
> and CPU utilisation is a fraction of that used by WU
> - Shared folders are a boon (once you've figured them out)
> - Exim (as the quality piece of software it is) delivers Maildir format
> messages
> perfectly (thanks Phil !!)
>
> My set up, which works well, is:
>
> - Exim as the MTA (all machines)
> - Courier-IMAP as the POP/IMAP server (we dont use POP but its there)
> - Horde/IMP as the webmail solution
>
> This is good for us because:
>
> - we use Exim throughout our organisation(s) on about 15 boxes
> - email is delivered to machines inside the firewall and local users access
> them with IMAP (OE, Netscrape, etc.) using Courier-IMAP
> - our webmail server is on a machine outside the firewall (so it can be
> accessed from the net) using IMP/Horde and it port-forwards back
> in to the Courier-IMAP server
>
> ... all works a treat.
>
>
> Mike
>
>
>
>
> --
> ## List details at http://www.exim.org/mailman/listinfo/exim-users Exim details at http://www.exim.org/ ##
>
--
