Real-Time Blackhole List

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What Does Real-Time Blackhole List Mean?

Real-time blackhole list (RBL) is a dynamic list of IP address owners that are active spammers or spam sources. The RBL may include Internet service providers (ISP) with customers that are known spammers or ISP servers that are hijacked for spamming purposes.

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RBL is also known as a DNS Black List (DNSBL).

Techopedia Explains Real-Time Blackhole List

The majority of spam is the result of online advertisements and unsolicited bulk email (UBE). When spam is delivered, the forwarding IP address is added to the RBL.

The RBL prevents system abuse by halting spam. However, the blacklisting process must be handled carefully. It cannot prohibit appropriate or authentic source connections or open-source networking. If an ISP subscribes to the RBL, the ISP may determine which IP addresses should be blocked and added to the RBL. If an IP address matches an IP address listed on the RBL, the connection is automatically dropped.

The RBL was first implemented by the Mail Abuse Prevention System (MAPS), which was acquired by Trend Micro in 2005. Trend Micro adheres to strict guidelines and policies in its continuous effort to nominate and remove spam IP addresses from its blackhole data listings.

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Margaret Rouse
Editor

Margaret jest nagradzaną technical writerką, nauczycielką i wykładowczynią. Jest znana z tego, że potrafi w prostych słowach pzybliżyć złożone pojęcia techniczne słuchaczom ze świata biznesu. Od dwudziestu lat jej definicje pojęć z dziedziny IT są publikowane przez Que w encyklopedii terminów technologicznych, a także cytowane w artykułach ukazujących się w New York Times, w magazynie Time, USA Today, ZDNet, a także w magazynach PC i Discovery. Margaret dołączyła do zespołu Techopedii w roku 2011. Margaret lubi pomagać znaleźć wspólny język specjalistom ze świata biznesu i IT. W swojej pracy, jak sama mówi, buduje mosty między tymi dwiema domenami, w ten…