To enable MAPS SPAM protection in Plesk, begin by selecting the server you wish to manage, then “Mail”, then “MAPS Zone”. The 5 major SPAM protection lists are listed below with a general description. Users can define which lists they would like to use:
1. Spamhaus block list (SBL) sbl.spamhaus.org: A free real-time DNS-based database of IP addresses of verified SPAMmers, SPAM gangs and SPAM services.
2. Arbitrary black hole list (ABL) spammers.v6net.org: Aggressive black list that may stop mail from popular mail servers (xxx.yahoo.com, xxx.hotmail.com)
3. Domain Name System Real-time Black List (DNSRBL) dun.dnsrbl.net: List of IP addresses of machines that are either direct SPAM sources or Dial-up (dynamic address) pools which would never be a source of non-SPAM messages.
4. VOX DNSBL vox.schpider.com: List of servers that send out SPAM, compiled by phydiux.com and it’s partners.
5. RFC Ignorant (Whois) whois.rfc-ignorant.org: List of IP’s that do not comply with RFC’s.
In the newer versions of Plesk, such as Plesk 8.1, they have renamed the “MAPS Zone” option to “Enable support for Trend Micro RBL+ Service.” If you want to enter multiple lists, separate the lists by semicolon. For example: “maps1.domain.com” or “maps1.domain.com;maps2.domain.com”.