This page provides all possible meanings and translations of the word rbl
The New Hacker's Dictionary
Abbreviation: “Realtime Blackhole List”. A service that
allows people to blacklist sites for emitting spam,
and makes the blacklist available in real time to electronic-mail transport
programs that know how to use RBL so they can filter out mail from those
sites. Drastic (and controversial) but effective. There is an RBL home page.
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