On 7/20/2010 7:12 PM, Shawn Bakhtiar wrote: > > Checked out GreyListing and Sanesecurity. Both look like really cool tools. > > However, we have been using SpamAssassin, ClamAV, with sendmail (Fedora Core > 8), and zan.spamhaus.org RBL, which does most of the heavy work, of blocking > incoming SPAM. I prefer this method since it is not at all resource intensive > (it doesn't really need to parse the header or body, doing so only after the > RBL oks the IP). > > With Graylisting, and sanesecurity, you would be doing a lot of processing > that the RBL (should) already be blocking. So I would definitely implement > RBL first (if not already there), before trying out the others. > > Again they are fantastic tools, if needed, but how much processor power are > you going to through at every email, vs. the rare occasion that a SPAM email > may get through before the RBL is updated?
Rare? On my low-volume server, the sanesecurity rules blocked 50 messages yesterday that got past the zen RBL. Of course, Zen blocked over 9000 messages in the same time frame, so I would definitely recommend the use of Zen as an MTA blocklist. -- Bowie _______________________________________________ Help us build a comprehensive ClamAV guide: visit http://wiki.clamav.net http://www.clamav.net/support/ml
