RE: [nznog] RBL's used

It is possible to set SpamAssassin up so that users can control their own spam filters. This does require a reasonable amount of coding to get it to work. I believe that Steve Phillips was working on something like this a while ago. Getting something like that working in conjunction with RBL queries on a per-user level would be great for allowing the customers more control over their mailbox. There is also another approach to bulk mail - DCC - which uses checksums to identify UCE. As to how effective it is though, I have no idea....