--On February 28, 2006 7:08:53 AM -0600 Al Lilianstrom <[log in to unmask]> wrote: > Our advice to folks who are complaining about spamcop blocking our site > has been to complain to their local mail admins about relying on spamcop > for blocking mail. We use spamcop as part of a scoring system for spam > that determine delivery but never rely on a single system (esp one we > don't control) for blocking mail. I'm amazed that anyone does. I use SCBL at home, and we also deploy it at my place of employ. The false positive rate is *EXTREMELY* low. We also use a 4xx (try later) rather than 5xx response code to the listings. What this means is most transient problems just result in mail that's a little delayed, while the huge number of actual SPAM sources gets dropped right off before we have to process the message. We block probably 40% of all attempted mail transactions using SCBL. We're also starting to get more aggressive about blocking dynamic hosts.