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Quoth Konrad Michels on Thu, Mar 13, 2003 at 15:18:27 +0000
> Afternoon folks!
> Just been asked by my CTO to prepare some guidlines for a mail system to
> cope with 6 million users, capable of coping with 2 million simultaneous
> users without blinking too hard.
Exim can do that easy.
<aside> ... Hey Nigel, does that rings any bells? </aside>
> My initial thoughts are along the lines of splitting the MTA function
> into:
> 1. incoming mail
> 2. mailstore
> 3. outgoing spool
> 4. pop3 access
Probably a good idea but not necessary the right answer.
> All the above would live on separate machines/clusters of machines.
Oh yes. Have you heard of Netapp?
> Any comments? I know someone on the list had a white paper on a similar
> scenario done with Exim 3.x - if that person would let me know again
> where it is I'd be most appreciative!
That would be me. The paper is available from my work pages at
http://gridlock.york.ac.uk/~yann/lsm.pdf. Actually the system was
started with exim 2 by Nigel and got moved to Exim 3 by myself. It
should have moved to exim 4 by now -- If there is anyone from Energis
still on the list, what's the status of that?. Most of the details are
confidential but the paper gives a meta description of the systems that
would work with all versions of Exim.
I have given a talk on large scale systems at an Exim workshop last year
and the notes are on
http://gridlock.york.ac.uk/~yann/exim. Those should
be your two main starting points.
Getting a precise set of requirement regarding to what the whole systems
is going to do is viatal. Virus scannering? Imap? Webmail? Spam
filters? PGP? Mailing lists? ... there are many things that will
determine what is the best answer for you.
Feel free to share you proposal to the list (or just to me) and we'll
all comment on that.
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