Laurie Brown laurie@brownowl.com wrote:
[...] I've used procmail recipes for anti-spam, and they are simply ineffective against most spam these days. [...] life's too short when there's a tool like spamassassin which sorts it all out, unpacks zips et al, undoes and examines MIME, and defangs html.
spamassassin I found to be rather memory and CPU hungry and not particularly effective against the spam I get. I currently run a 3-line defence:
1. I can't read Chinese or Korean, so most of that is filtered out. (Sorry.)
1.5 List emails get filtered off here at present. ;-)
2. A Distributed Checksum Clearinghouse filter (dccproc) filters off most bulk mails (nb, that is not quite the same as spam, but close enough for most).
3. A slightly under-trained (1500 emails seen in total) Bayesian word probability filter gets the rest.
I get about 2 spams in my inbox per day, on average, which is a false negative rate of about 0.2%. I haven't had any non-spam non-bulk email in the spamtrap yet.