What is spam block list?
With ever growing number of email spams, there are a number of anti-spam
projects born to combat spams. The goal of spam block list is to publicise
the list of spammer and compromised hosts so that ever-increasing flow of
spams through those hosts can be minimized.
What is SPAM?
Spam is known as flooding the Internet with unwanted messages, mostly
commercial advertisement posted on public forums, usenet or sent through
email systems (junk mail). Generally, spam is defined as unsolicited
commercial email (UCE) or unsolicited bulk email (UBE). Unsolicited email
that is not commercial or bulk is generally not treated as a spam. If
a long-lost high school classmate finds your email address and sends you
an email, this could hardly be called spam even though it's unsolicited.
What are known block lists?
There are a number of block lists, each providing a list of specific spammer
lists. DNSBL (DNS-based Blackhole List) also known as
RBL (Real-time Blackhole
List) publishes a list of IP addresses that can be queried by
software on the Internet. The technology is built on the DNS, and most mail
transport agents can be configured to reject or flag messages which have been
sent from a host listed on the list. SORBS (Spam and Open
Relay Blocking System) is one of the DNSBL, and it publishes known spammer
proxy and open relay servers.
For a list of known block lists, please visit the following sites:
· Google Directory
· Open Directory