Spam Control Considered Harmful

Greg A. Woods woods at
Thu Oct 30 05:47:14 UTC 1997

[ On Wed, October 29, 1997 at 21:53:52 (-0600), John A. Tamplin wrote: ]
> Subject: Re: Spam Control Considered Harmful
> The difficulty in the latter is finding a way to determine what SMTP servers
> they are supposed to have access to and then implementing that in a router
> access list.

There should be no difficulty at all in doing this.  If they dial into
your network then they use your outgoing mail relay server, and yours
alone.  Period.  (Unless you have some kind of agreement in a roaming
system where you authenticate your own users to someone else's dial-up
and vice versa, in which case you only allow the user to connect to the
the "home" ISP's mail relay host(s).)

							Greg A. Woods

+1 416 443-1734      VE3TCP      <gwoods at>      <robohack!woods>
Planix, Inc. <woods at>; Secrets of the Weird <woods at>

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