by Quade » Sat Feb 18, 2012 5:10 pm
Nothing, I mean nothing prevents spammers from using the "From" of a valid poster. That's why automating this is dangerous. You can easily filter out regular posters if you're not careful.
If you get this poster filter wrong, your only choice will be to re-download headers. If you let them download and clean them out after the fact, you're less likely to kill valid posts. That's neither here nor there and won't prevent me from parhaps implementing a poster killer BUT, it's something you need to keep in mind. Personally, I'd rather see the spamers and perhaps kill them a little at a time than run the risk of missing valid posts.