filter mode and hints.

[Eric Limpens]

On Tue, Apr 08, 2003 at 11:42:09AM -0500, Shawn Barnhart wrote:
> 
> > = = = Original message = = =
> > I did an attempt to make something like that using the
> > sendmail milter api. Although I've got a milter now, which
> > takes every message, and popen()'s bogofilter, this clearly
> > is too slow.
> >
> > But I do think this is a nice way to scan a lot of messages
> > a day. The intention is to tag all incoming messages, and
> > pass them to the proper MTA. This way every customer will be
> > able to decide for him/her self what to do with the tagged
> > messages.
> > = = = eof Original message = = =
> 
> If there was a reliable bogofilter-based milter that would work on
> passthrough MTAs and handle 10k messages per day, I'd be ecstatic.

I attempted to send 1000 messages from a nearby fallback mx host 
to this setup, and this went very well, although I don't think it
got to maximum-speed.

Testing it locally, generating 1000 messages on the server where the
bogofilter-milter was running, things went wrong. Several copies 
of bogofilter were running, and sendmail wasn't able to communicate
with the milter a lot of times :(


> Where I work the users scream about SPAM, but with Exchange as the final MTA
> there's little that can be done about it, especially with management's
> current financial generosity.  All the good tools are for local delivery, or
> if they have some kind of passthrough MTA support it's not at all reliable.

I think 'tagging' spam messages in one place, and forwarding messages
to the next mta (we've got qmail, CommuniGate and Exchange running) is
a nice solution. Now we've got to have a fast and stable spam-filter,
my best guess was to use the milter-api and sendmail.

Eric