http://www.junkemailfilter.com/blog World\'s Most Advanced Spam Filtering Technology Thu, 28 Feb 2008 17:34:34 +0000 http://backend.userland.com/rss092 en We now have what I think is the fastest spam bot detection on the planet. Our blacklist are now listing over a million spam bots that have tried to spam us in the last 4 days. We only keep 4 days of data because if we get something wrong or ... http://www.junkemailfilter.com/blog/2008/02/28/new-spam-detection-meathods-working-well/ Made an interesting observation on Friday that spam bots don't do a QUIT at the end of an SMTP session. Real email servers are polite and after the message is sent they send a QUIT commant to tell the receiving server to close the connection. Spam bots however don't send ... http://www.junkemailfilter.com/blog/2007/09/09/found-a-new-way-to-detect-spam/