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Subject: Re: Preventing email abuse
From: Wietse Venema (wietseporcupine.org)
Date: Mon Jun 19 2000 - 17:27:33 CDT

Marco d'Itri:
> On Jun 19, Wietse Venema <wietseporcupine.org> wrote:
>
> >Out of the box, Postfix permits only a few hosts to relay their
> >mail through it.

> Except if you have a cable modem. Then you will relay for most (if not
> all) cable modem users in the world, because they are assigned IPs in
> the 24.0.0.0/8 netblock.

So, what smart solution do you recommend? One should not be a guru
in order to set up Postfix. Using the netmask will break already
existing installations (and would not make sense for cable modems).

        Wietse