Re: [bitfolk] Fw: You have received a secure message from Bank Of America (fwd)

Hi Max, On Wed, February 20, 2013 7:25 pm, Max B wrote:   It can: http://wiki.apache.org/spamassassin/Rules/RDNS_DYNAMIC However you must understand that this is not a foolproof binary operation and so SA would never act on that rule alone (unless you forced it to). The whole purpose behind a decent anti-spam strategy is that you can't usually just implement 'if x then ban' approach without a high risk of false positives and negatives. SA provides a score-based holistic strategy that can accurately determine 'spaminess' based on a whole variety of factors and thus can used with a high degree of confidence. Non-spam can often fail a single test however if a genuine spam is going to trip over one test it'll usually trip over several. That's how you can tell them apart. Crude procmail recipes acting on one liners will either drop mail you want or won't stop mail you don't. Mathew