[clug] Mysterious delivery problems

Simon Haddon simon at sibern.com.au
Tue May 20 20:30:44 EST 2003

I've been having the same problems.  I have a pcug.org.au email that is 
from the old days and I still keep it active.  It looks like PCUG must be 
using a blacklist as well.  Damn.

>>>>>>>>>>>>>>>>>> Original Message <<<<<<<<<<<<<<<<<<

On 20/05/03, 5:27:49 PM, Matthew Hawkins <matt at mh.dropbear.id.au> wrote 
regarding Re: [clug] Mysterious delivery problems:

> Martin Pool (mbp at samba.org) wrote:

> >     So don't use osirusoft's blacklists.  There are plenty of other lists
> >     that don't take so much glee in deliberately creating collateral
> >     damage.

> I'd go so far as to say don't use blacklists.  For some reason they
> always seem to be run by very... temperamental... people.

> (some may say s/tempera// ;)

> I enjoy messing around with email systems and by far the best thing I've
> ever done to combat spam was to use a content filtering system.  You can
> neuter over 80% with a few simple regex's without fear of accidentally
> trapping "ham" - which I think is well worth the slight extra CPU cost
> in processing (I measured 3-5% on a 400Mhz cpu), and the crafty ones
> that make it past that get done by a bayesian filter.

> Not sure if I've mentioned it here before, but the trend I'm seeing
> right now is that the spam that still makes it (I've gotten 3 from
> memory in the past year, one was recently to this list) are
> indistinguishable from legitimate human conversation.  At most, they are
> simply off-topic messages. Extremely ineffective at selling anything,
> which means less money and incentive to use spam, and at 3/10,000+
> messages, hardly irritating and easily forgotten.

> I recently evaluated my spam box (I keep it solely to re-seed the
> bayesian filter) and there were no false positives in it.  I'm very,
> very happy with that.

> (and, for the record, I regularly get HTML and HTML-wannabies email from
> family and aquaintances using all sorts of stupid clients)

> --
> Matt
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