Op 20 jun 2011, om 23:55 heeft John Levine het volgende geschreven: >> An organization that blocks 90% of spam with no false positives is >> incredibly useful. > >> Using a greylisting system is equally effective without the black >> list part. > > Hi. I'm the guy who wrote the CEAS paper on greylisting. > > Greylisting is useful, but anyone who thinks it's a substitute for > DNSBLs has never run a large mail system.
We use the black lists for scoring spam messages, but we never outright block messages. I was not implying that blacklists are not useful at all. I just see things in shades of grey over black and white. Of the 17 domains we have with roughly 250 users it does well enough. Regards, Seth
