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Date: Tue, 21 Oct 1997 11:11:58 +0700 (JAVT)
From: V Gatut Harijoso <gatut@student.unpar.ac.id>
To: chas <sweeting@tm.net.my>
cc: freebsd-isp@FreeBSD.ORG
Subject: Re: To support 2k users..
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On Mon, 20 Oct 1997, Tom wrote:
> On Tue, 21 Oct 1997, chas wrote:
> > Sorry to trouble you,
> > Just a simple question that has been intriguing me for
> > a while - if you have 5K users, on several boxes.
> > How do you make them all have the same email domain ?
> > userx@domain.com ?
>   You do header rewriting (or masquerading, depending on your MTA), to
> rewrite all e-mail to come from the common domain.  For receiving mail,
> you keep a database of what host holds what mailbox, and keep the
> database synced between servers, then route it over to the correct server 
> (if needed).  Easy to do in Sendmail (and Exim, or Smail).
>   I much prefer putting e-mail on a dedicated, closed server.  Basically a
> server per task, rather than a bunch of servers all doing the same tasks.
> 
> > ie. If you have your users split over 4 boxes, and all
> > with userx@domain.com, how do you route mail to the
> > correct box ?
> > 
> > Apologies if I am overlooking something obvious,
> > 
> > Chas


A simple idea. Example:

If you have dedicated server for receiving mail. Use this to be your
@domain.com. For sendmail, edit your /etc/aliases like this:

gatut:	gatut@student.unpar.ac.id
chas:	tom@tm.net.my

So, mail to gatut@domain.com will be forwarded to me, and mail to
chas@domain.com to you.

> Tom