To edit the details of an already added IP or IP range hit its corresponding 'Edit' button, to delete it click its respective 'Delete' button. Should you like to add a new DNS Blacklist press the 'Add DNS BlackList' button, fill in the 'Operator Name' and 'DNS BlackList' text boxes, then check the 'Enable this Blacklist' option and hit the 'Quick Add' button.Ĭonfigure the list of IPs or IP ranges to be skipped by the DNS BlackList lookup by adding the respective IPs in this section. To deal with this problem, the Internet Assigned Numbers Authority (IANA) has set up three special DNS servers called 'blackhole servers'. Available DNS BlackLists can be enabled or disabled by simply clicking on their corresponding 'Enable' or 'Disable' buttons. Mail servers can be configured to reject or. To edit the details of an already added DNS Blacklist, hit its corresponding 'Edit' button, to delete it click its respective 'Delete' button. A DNS Blackhole list (DNSBL) contains a set of IP addresses which are most often used for spamming activities.

Use the options in this section in order to configure the DNS blacklist. DNSBLs are most often used to publish the addresses of computers or networks linked to spamming. A DNSBL (DNS-based Blackhole List, Block List, or Blacklist) is a list of IP addresses published through the Internet Domain Name Service in a particular format.

Dns blackhole