Tom Martin

In this post, Donnie mentioned the use of various spam filters and IMAP proxies.

I don't know about other people, but most of the spam I receive is in character sets that I can't even read. So, it only takes one simple procmail rule to filter them all out:

:0
* Content-Type:.*(big5|gb2312|euc-kr|ks_c_5601-1987).*
/dev/null

It makes sense to put this sort of thing before your spam filters, as it will use nowhere near the resources.