On Wed, 16 May 2007 23:17:50 UTC, "Mortimer" <(E-Mail Removed)> wrote:
> "Andy Hewitt" <(E-Mail Removed)> wrote in message
> news:1hy8dez.j3l4ny2l9r8rN%wildrover.andy@googlema il.com...
> > Bob Eager <(E-Mail Removed)> wrote:
> >
> >> On Wed, 16 May 2007 22:27:27 UTC, (E-Mail Removed) (David Horne, _the_
> >> chancellor (*)) wrote:
> >>
> >> > I'm also immensely frustrated that there is still no really effective
> >> > means of dealing with spam. Unless someone can recommend a provider
> >> > that
> >> > can...
> >>
> >> The way I do it is run my own mail server. I use the Zen (nothing to do
> >> with the ISP) Spamhaus blacklist. I also have a few filters to address
> >> persistent problems. That gets rid of the majority, then I feed it
> >> through a Bayesian filter.
> >>
> >> My mail client sees half a dozen spam emails in a bad week.
> >
> > I was using Spamcop for a while, which uses a similar filtering system,
> > but I found the Gmail one works better.
> >
> > There's isn't a way to stop all spam, there are just too many ways to
> > get it through. You can only minimise what gets through.
>
> Do you find you get many false positives - innocent email that is wrongly
> catgegorised as spam and therefore deleted uneen by the recipient?
I get about one a month. Most of the real stuff is stopped at connection
time by the blacklist, etc. The stuff identified by the Bayesian filter
goes into a holding area which I check every three or four days. The
check takes a couple of minutes, and false positives are weeded out then
(of course, they are used to train the filter).
> Are server-based spam blockers better - because you don't want *any*
> legitimate emails disappearing without the user seeing them, even if this
> means that a few spam messages get through.
As I said, the main thing is to block the connections from real spam
machines. This might occasionally block a real system, but only if an
ISP gets blacklisted. And the sender will generally get a non-delivery
report in that case, so it isn't a silent failure.
--
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