[Mimedefang] Can I block extended ascii codes in the Subject

[Paul Murphy]

Mark,

> I often get emails with crap like:
> Viígra in the subject line.
> I would bounce a lot of spam if I could just block all subjects that
> have characters that are in the extended ascii set.

See http://www.rulesemporium.com/ and look at the rules for 70_sare_html?.cf -
ruleset 1 has subject encodings including ISO, UTF, Windows, and so on.

Also look into http://mywebpages.comcast.net/mkettler/sa/antidrug.cf - this has
all of the common variants of Viagra (v!agra, vi at agra, etc) et al covered.  This
is also mirrored at the site above.

You might also want to look into the automatic updating scripts at
http://www.exit0.us/index.php/RulesDuJour 

Once you start down the road of blocking SPAM, it very quickly becomes an all or
nothing choice - use all of the features and rulesets available, or give up.
Halfway house solutions will leak some spam, how much depends on your config,
but choosing the correct level of paranoia is difficult.

Best Wishes,

Paul.
__________________________________________________
Paul Murphy
Head of Informatics
Ionix Pharmaceuticals Ltd
418 Science Park, Cambridge, CB4 0PA

Tel. 01223 433741
Fax. 01223 433788


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