The SpamCop Blocking List (SCBL) lists IP addresses which have transmitted reported email to SpamCop users. SpamCop, service providers and individual users then use the SCBL to block and filter unwanted email. The SCBL is a fast and automatic list of sites sending reported mail, fueled by a number of sources, including automated reports and SpamCop user submissions. The SCBL is time-based, resulting in quick and automatic delisting of these sites when reports stop.
The DSBL ( Distributed Sender Blackhole List ) lists contain the IP addresses of servers which have relayed special test messages to firstname.lastname@example.org; this can happen if the server is an open relay, an open proxy or has another vulnerability that allows anybody to deliver email to anywhere, through that server.
The Distributed Sender Blackhole List has three DNSBL lists, one can have entries added by anybody while the other only accepts entries by testers who are trusted by the DSBL staff. We have chose to use the list.dsbl.org from DSBL on our mail server.
- single stage open SMTP relays
- open proxies allowing the CONNECT command
- web servers using a non-secure formmail
- Only trusted testers can list hosts in this list
4.ORDB ( Open Relay Database)
ORDB.org is the Open Relay Database. ORDB.org is a non-profit organisation which stores a IP-addresses of verified open SMTP relays. These relays are, or are likely to be, used as conduits for sending unsolicited bulk email, also known as spam. By accessing this list, system administrators are allowed to choose to accept or deny email exchange with servers at these addresses.
In addition to the above RBLs which are applied to all our Windows / Linux shared / reseller hosting packages, the following spam protection is also supported on our mail server depending on the server platform ( Windows / Linux ) you have signed up:
5. Bayesian Filtering ( Windows platform ) :