Look at Vipul's Razor and DCC, which are content based rather than IP
based. IP based spam filtering isn't viable anymore. I've seen a lot of
virus-based spam sending recently, where there are only a handful of
messages, sometimes just one, per infected address.
One of our customers is Monstermail.com, which provides a filtering
service for a fee. You can setup procmail to have them filter mail and
send it back to you.
--Dean
On Tue, 9 Jul 2002, Graham Van Epps wrote:
> We've been using procmail and the sendmail DNSBL feature to check
> incoming mail for spam, but we still get a *lot* of it. I wonder what
> other people are using to fight spam coming into their networks. Whats
> the most popular? Are there *any* good opensrc or commercial tools to
> do this? It seems like most of the tools out there arent very good.
> Any ideas?
>
>
>
> Graham Van Epps
>
>
>
>
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