ses said:
What can be done to combat the spam on usenet groups like this one?
I'm assuming it's something people have tried to take before so is it
of such a huge volume / difficult to filter that a lot still gets
through?
Some of it always gets through, no matter how you filter. Just adjust
the rules whenever necessary. Here are some of the downscoring rules I
currently use for this group (an excerpt from an active gnus scorefile):
("subject"
("Urgent" -10 733889 s)
(" shoe " -1000 733889 s)
(" girls " -1000 733886 s)
(" Money " -100 733888 s)
("pharmacy" -1000 733889 s)
(" prescription" -1000 733889 s)
("Cheap " -1000 733892 s)
("Purchase " -1000 733889 s)
("Buy " -100 733889 s)
("Free " -20 733892 s)
("trade" -1000 733891 s)
("Discount" -1000 733891 s)
("payment" -1000 733892 s)
("paypal" -100 733892 s)
("wholesale" -1000 733892 s))
("from"
("hot " -1000 733892 s)
("<shoes" -1000 733892 s)
("cherry" -1000 733892 s)
(" shoes " -1000 733889 s)
("iloveyou" -1000 733892 s)
("Naeem " -1000 733889 s)
("Ministr" -1000 nil s)
("trade" -1000 733891 s)