Re: [Exim] mail server for large sites

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Autor: Stuart Lynne
Data:  
Para: exim-users
Asunto: Re: [Exim] mail server for large sites
In article <37CD5C92.234F42E1@???>,
me <me@???> wrote:
>Hi
>
>I've been asked to design/setup a mail server for
>large customer base >500K , I'd like to split up
>the mailboxes across several machines, this I
>belive I can do using exim, and doing a lookup in
>the mysql db for delivery. However this is where I
>get stuck (in theory since I have not practiced it
>yet)
>
>Lets say i send a mail to me@???, this
>I would want to hit my "first" mail servers call
>it server1 (I spent a long time picking that name
>:-)), this then does the lookup on it local mysql
>db, and decides that the mail should be dropped on
>server2.


This (in principle) is sound and not exceedingly difficult to setup. The hard
part is the database setup and admin tools for same. I have been delivering
mail using variations on this theme for many years. We used smail before
exim. Exim lends itself to this very easily.


>To me this seems simple (so if anyone sees a wide
>hole in the above , please fill it in), now the
>problem that I forsee is when the user wishes to
>retrieve the mail, is there a pop server which
>would authenticate against server1 mysql db, look
>for the location and get the mail there, so
>basically I have no user accounts on any of the
>machines just in the one db. This may be a little
>off topic, but I guess itsall part and parcel
>(forgive the pun) of mail delivery


This is slightly harder and there are no existing free packages that I am
aware of that support it. I'm actually in the middle of implementing this
solution with modifications to the cyrus imap server (it supports pop
as well).

-- 
Stuart Lynne <sl@???>      604-461-7532      <http://edge.fireplug.net>
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