Re: Smail spam-prevention filter?
Many thanks, I intend to do the massive upgrade, pain,
and suffering of trying to get everything rebuilt from
scratch when 2.0 is considered released.
Yes, old smail. I will forward this to the debian-user
list for comment. Unfortunately, I had to unsubscribe
due to message volume, so I must request direct replies....
Curt-
> On Thu 28 May 1998, Curt Howland wrote:
>
> > I obviously don't have my smail filter configured correctly,
> > as last night I had to pull the ethernet plug from my Debian
> > machine running smail to stop many thousands of spam emails
> > using my machine as a remailer.
> >
> > My question is: Preventing incoming mail "To:" anything other
> > than the local machine, and "From:" anything but the local
> > machine would seem a standard form of security filter for
> > smail.
>
> This misuse of your system is called relaying. The current version of
> smail should support blocking this, but perhaps does not do so per
> default.
>
> I use exim (comfortable when you're used to smail and a blessing if
> you're used to sendmail :-), and the Debian package of that comes with a
> default configuration of "prevent relaying".
>
> Hmmm, I just figured you're probably still using Debian 1.3.1; that
> might not have the smail (or exim, or whatever) that will help block
> relaying. As Debian 2.0 is not yet released (although getting close!) it
> might be troublesome for you to upgrade to the "deepfreeze" 2.0 version.
> Or not, depending on your expertise...
>
> > Does anyone know of such a standard rules entry?
>
> I don't think that the old smail had this. It wasn't that big a problem
> up to one or two years ago :-(
>
> > I don't know what list to send this to, if "security" is
> > not a good place, I will try the "users" list.
>
> I'd guess users would have been better; maybe folks there have
> suggestions for your version of smail.
>
>
> Paul Slootman
> --
> home: paul@wurtel.demon.nl | work: paul@murphy.nl
> http://www.wurtel.demon.nl | Murphy Software, Enschede, the Netherlands
>
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