a DNS (domain name service)-based spam blocking list
a service which provides a list of known spammers' IP addresses
DNS based BLacklist, a way of widely distributing blacklist data using a DNS zone as a database.
Domain Name System Block Lists. A list of domains that does not try to prevent spammers from sneding mail through their servers.
Acronym for Domain Name Service Blacklist or DNS Blacklist. These are databases that contain IP addresses of known spammers, spamhausen, rogue networks, etc. that can be used by ISPs to block incoming mail. The DNS part comes from the fact that you perform lookups on these databases via the DNS system. There are many different blacklists out there, all with different pros and cons. Some are very effective but also block a lot of legitimate mail, while others are a lot safer but stop very little spam.
A DNSBL (definition below) is a means by which an Internet site may publish a list of IP addresses that some people may want to avoid and in a format which can be easily queried by computer programs on the Internet. The technology is built on top of the Internet DNS or Domain Name System. DNSBLs are chiefly used to publish lists of addresses linked to spamming.
