Anti-spam methods (was: Re: [SLL] this list losing mail?)

[Kurt Buff]

On 7/27/07, Jeremy C. Reed <reed at reedmedia.net> wrote:
> On Fri, 27 Jul 2007, Kurt Buff wrote:
>
> > On 7/27/07, Glenn Stone <technoshaman at liawol.org> wrote:
> > > On Fri, Jul 27, 2007 at 10:19:21AM -0700, Dan Wilder wrote:
> > > >On Thu, Jul 26, 2007 at 02:15:59PM -0500, Jeremy C. Reed wrote:
> > > >> Why does the linux-list mail server lose mails instead of bouncing? Or are
> > > >> they waiting for moderation?
> > > >
> > > >Spamfiled on a false positive on the way thru mxlogic.net, the MX
> > > >provider?
> > > >
> > > >Bouncing suspected spams has never been The Way To Go ... too much
> > > >collateral damage.
> > >
> > > If you can bounce it during the session, it's fine... but, definitely,
> > > bouncing after QUIT using the info available in the headers... bad juju.
> > >
> > > Which is one reason I haven't implemented system-wide  content
> > > filtering... I haven't figured out a good way to link Bayesian filtering
> > > into the SMTP session with Postfix (there's some milter stuff out there, but
> > > I haven't been able to get it to work right yet), and frankly I'd rather
> > > just eyeball the 10% or so that gets through and maybe do some Bayesian in
> > > procmail than try to maintain something system-wide...
> >
> > Maia Mailguard (http://maiamailguard.com) might be what you're looking
> > for. I've just implemented it for our company (around 280 people in
> > the US/UK/AU), and it works very well indeed, though it might be more
> > overhead than what you want if you run a lightweight environment.
> >
> > I've set it so that it quarantines all mail it thinks is spam, and it
> > can be set up to send a reminder message with a list of quarantined
> > mails, so that they can be reviewed and rescued by the end-user, along
> > with training of ham/spam.
> >
> > It's pretty dang sweet.
>
> We are talking about a subscriber-only mailing list. If a person is
> subscribed then their emails to the mailing list should not be quarantined
> where they can be overlooked and lost within other spam. I'd prefer a
> bounce so I would know my email was lost instead of waiting and realizing
> it never showed up.
>
>   Jeremy C. Reed

I can see that.

However, is it possible that it would be useful if it were a moderated
list, with the moderator getting the reminders?

Kurt