What is a Realtime Blackhole List (RBL)?
The Real-time Blackhole List, or RBL, is a blacklist of Internet TCP/IP addresses known to send spam, or considered friendly to spam. This blacklist is maintained independently of DeSpaminator. For more information about the RBL, see http://mail-abuse.org/rbl/ The RBL is an effective way of drastically reducing the amount of spam that you receive. However, if you enable the RBL test, it is likely that you will also accidentally refuse valid email. The reason for this is the RBL bans all email coming from a given set of TCP/IP addresses. For example, if an ISP has been banned because they allow spam from their mail servers, then all mail from that ISP will be banned, not just the spam. We do not recommend that this setting be enabled if it is important to you to not reject valid mail. On the other hand, if you fully understand the implications of the RBL for your system’s mail, and you want to participate, then you should enable this feature, as the RBL has been effective in getting ISP
