From owner-freebsd-smp  Sat Jul 31  9:22:56 1999
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Date: Sat, 31 Jul 1999 09:22:38 -0700 (PDT)
From: Matthew Dillon <dillon@apollo.backplane.com>
Message-Id: <199907311622.JAA99944@apollo.backplane.com>
To: tcobb@staff.circle.net
Cc: blapp@attic.ch, freebsd-current@FreeBSD.ORG,
	freebsd-smp@FreeBSD.ORG
Subject: Re: RE: network got stuck during high nfs-load
References:  <A0CFA284C004D211B7EE0060082F32A41F2830@freya.circle.net>
Sender: owner-freebsd-smp@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.org

    The way I usually handle pseudo users via sendmail is to route
    them via a dummy subdomain.

    So, for example, my main server is 'apollo.backplane.com'.  I route
    mail destined for 'pop.apollo.backplane.com' to my special pop mail
    backend.

    My /etc/aliases and other forwarding tables then simply map the 
    usernames that I want to route to the dummy domain.  For example,
    the pop user 'fubar' would be mapped to 'fubar@pop.apollo.backplane.com',
    where 'fubar' does not exist in the password file or anything like that.

    In sendmail, it is a simple addition to ruleset 98:

R$+ + $* < @ pplus . $=w > $*		$#popplus $: $1 < @ pplus . $3 > $4
R$+ + $* < @ pplus . $=w . > $*		$#popplus $: $1 < @ pplus . $3 > $4

R$* < @ pplus . $=w > $*		$#popplus $: $1 < @ pplus . $2 > $3
R$* < @ pplus . $=w . > $*		$#popplus $: $1 < @ pplus . $2 > $3


    And then add the new mailer:

Mpopplus,	P=/usr/local/bin/dpopmail, F=SDEFhlMsu, S=10/30, R=20/40,  
		U=dpop, A=dpopmail $u   

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>


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