RBL or more formally known as Realtime Blackhole List, is a list of IP addresses whose owners have been reported and confirmed to be spamming online, either intentionally or not. To enable/disable RBLs within your Parallels Plesk environment, please follow the step-by-step directions outlined below:
Switch on spam protection based on DNS Blackhole lists
DNS Zones for DNSBL service
Should you have any further questions pertaining to your Plesk license, please feel free to get in contact with our web hosting support team for additional assistance.
Article Number: 114
Posted: Tue, May 15, 2012
Last Updated: Fri, May 18, 2012
Posted: LicenseCube Support [support@licensecube.com]
Online URL: http://kbase.licensecube.com/control-panel-licenses/how-do-i-enable-disable-rbl-spam-protection.html