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Date: Sun, 05 Jan 1997 14:27:35 +0200
From: Nadav Eiron <nadav@barcode.co.il>
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To: Steve <shovey@buffnet.net>
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Subject: Re: Virtual mail hosting? (fwd)
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Steve wrote:
> 
> Please dont spam me for reposting this - I just keep seeing this question
> come up again and thought I would be helpful.
> 
> ---------- Forwarded message ----------
> Date: Thu, 15 Aug 1996 22:39:30 -0400 (EDT)
> From: Mark Mathis <mark@earth.mat.net>
> To: "Jun, Gyu-Chang" <geoid@ktnet.co.kr>
> Cc: questions@freebsd.org
> Subject: Re: Virtual mail hosting?
> 
> On Fri, 16 Aug 1996, Jun, Gyu-Chang wrote:
> >
> >   Now, here is the question. Is it possible to set up virtual mail host?
> >   I think if I set Cw record in sendmail.cf, aaa@www.aaa.com and
> >   bbb@www.bbb.com can be handled. My point is that ONE FBSD box can accept
> >   mail for webmaster@www.aaa.com and webmaster@www.bbb.com simutaneously..
> >
> 
> What you will need to do is first modify sendmail.cf to deal with two
> databases in the /etc directory that will handle the aliasing.
> 
> add these two lines to sendmail.cf
> 
> Kvirtualhosts btree /etc/virtualhosts.db
> Kvirtualmasqs btree /etc/virtualmasqs.db
> 
> add this rule set for the return mail masq
> 
> S40
> 
> R$* < @ $* > $*         $@ $1 < @ $2 > $3       already fully qualified
    [snip]

I once followed those instructions, and found out I had to modify
ruleset 61 as well to look like this:
S61
 
R$* < @ $* > $*         $@ $1 < @ $2 > $3               already
qualified
R$=E                    $@ $1 < @ $j>                   show exposed
names
R$+                     $: $(virtualmasqs $1 $: $1 @ $M $)
#R$+                    $: $1 < @ $M >                  user w/o host
R$+ <@>                 $: $1 < @ $j >                  in case $M
undefined

I don't remember what the exact problem was, but this fixed it :-).

Nadav