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April 2021

Domain Name System-based Blackhole List
A Domain Name System-based Blackhole List, Domain Name System Blacklist (DNSBL) or Real-time Blackhole List (RBL) is a service mail servers can check
Domain Name System
The Domain Name System (DNS) is a hierarchical and decentralized naming system for computers, services, or other resources connected to the Internet or
Distributed Sender Blackhole List
The Distributed Sender Blackhole List was a Domain Name System-based Blackhole List that listed IP addresses of insecure e-mail hosts. DSBL could be used
Root name server
A root name server is a name server for the root zone of the Domain Name System (DNS) of the Internet. It directly answers requests for records in the
DNS sinkhole
sinkhole, or Blackhole DNS is a DNS server that gives out a false result for a domain name. A sinkhole is a DNS provider that supplies systems looking for
Black hole (networking)
A DNS-based Blackhole List (DNSBL) or Real-time Blackhole List (RBL) is a list of IP addresses published through the Internet Domain Name System (DNS)
Hosts (file)
freely. DNSBL, a DNS-based blackhole list Content-control software Ad filtering Internet Systems Consortium. "The Most Widely Used Name Server Software: BIND"
The domain name arpa is a top-level domain (TLD) in the Domain Name System (DNS) of the Internet. It is used predominantly for the management of technical
Sender Policy Framework
similar to those of DNS-based blackhole lists (DNSBL), except that SPF uses the authority delegation scheme of the Domain Name System. Current practice requires
Mail Abuse Prevention System
address or an IP block is listed: Real-time Blackhole List (RBL), the one for which MAPS is probably best known. Dialup Users List (DUL), blocks of addresses