著者: Jerry Bell
日付:
To: Kamesh Patel, exim-users
題目: Re: [Exim] random letters in subject
The way I've been catching these is by looking for pairs of letters that
don't go together and giving them a moderate weight ie.
rawbody SPAM_TAG /{xb|bv|dv|vg|bf|fj|kf|qc|zl|jw|yq|qk|jt|vz|xl|zj|fg|xd}/i
describe SPAM_TAG Message contains a known spam tag
score SPAM_TAG 1
It seems to work well as an adder to the rest of the spamminess of the
message, though I have my threshold set pretty low (5).
NOTE: if someone has a better way to do this, please speak up. I think my
way is pretty lame :)
Jerry