On Thu, 2004-12-09 at 19:15, Paul Howarth wrote: > Ow Mun Heng wrote: > > On Thu, 2004-12-09 at 02:54, Scot L. Harris wrote: > >>The SURBL option examines the URLs in the spam messages and checks > >>various block lists. If they show up on the block list the score is > >>increased appropriately. > > > > I was just asking that question. Thanks for clearing that up. So, > > effectively, it's just another form of greylisting then. > > No, greylisting is a completely different thing. Greylisting ensures that the > sending server is a proper MTA that retries when it sees a temporary failure > during a delivery attempt. Most spamware does not do this, hence greylisting > stops lots of spam. SURBL is looking at the message body after delivery and > scoring it as likely to be spam or not based on the URLs found there. Two > completely different things. In that case, in some cases, eg: if one runs their own mail-server, grey-listing seems to be a better option compared to spamassassin, even when using SURBL. Reason being, greylisting stops it at the MTA level, spamassassin only tracks it once it's already in the system. -- Ow Mun Heng Gentoo/Linux on D600 1.4Ghz Neuromancer 22:05:15 up 31 min, 4 average: 0.26, 0.60, 0.88
