{"id":11010,"date":"2011-11-27T14:28:23","date_gmt":"2011-11-27T14:28:23","guid":{"rendered":"https:\/\/www.techopedia.com\/definition\/real-time-blackhole-list\/"},"modified":"2011-11-27T14:28:23","modified_gmt":"2011-11-27T14:28:23","slug":"real-time-blackhole-list","status":"publish","type":"definition","link":"https:\/\/www.techopedia.com\/definition\/25294\/real-time-blackhole-list-rbl","title":{"rendered":"Real-Time Blackhole List"},"content":{"rendered":"<h2><span id=\"what_does_real-time_blackhole_list_mean\">What Does Real-Time Blackhole List Mean?<\/span><\/h2>\n<p>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. <\/p>\n<p>RBL is also known as a DNS Black List (DNSBL). <\/p>\n<h2><span id=\"techopedia_explains_real-time_blackhole_list\">Techopedia Explains Real-Time Blackhole List<\/span><\/h2>\n<p>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.<\/p>\n<p>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.<\/p>\n<p>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.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>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. RBL is also known as a DNS [&hellip;]<\/p>\n","protected":false},"author":7813,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_lmt_disableupdate":"","_lmt_disable":"","om_disable_all_campaigns":false,"footnotes":""},"definitioncat":[218,245,219],"class_list":["post-11010","definition","type-definition","status-publish","format-standard","hentry","definitioncat-cybersecurity","definitioncat-internet","definitioncat-networks"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.2 (Yoast SEO v24.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is Real-Time Blackhole List (RBL)? - Definition from Techopedia<\/title>\n<meta name=\"description\" content=\"This definition explains the meaning of Real-Time Blackhole List and why it matters.\" \/>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Real-Time Blackhole List\" \/>\n<meta property=\"og:description\" content=\"This definition explains the meaning of Real-Time Blackhole List and why it matters.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.techopedia.com\/definition\/25294\/real-time-blackhole-list-rbl\" \/>\n<meta property=\"og:site_name\" content=\"Techopedia\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/techopedia\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@techopedia\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.techopedia.com\/definition\/25294\/real-time-blackhole-list-rbl#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.techopedia.com\/definition\/25294\/real-time-blackhole-list-rbl\"},\"author\":{\"name\":\"Margaret Rouse\",\"@id\":\"https:\/\/www.techopedia.com\/#\/schema\/person\/f5dd538e31ee352d105b8af36c4268a5\"},\"headline\":\"Real-Time Blackhole List\",\"datePublished\":\"2011-11-27T14:28:23+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.techopedia.com\/definition\/25294\/real-time-blackhole-list-rbl\"},\"wordCount\":203,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.techopedia.com\/#organization\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.techopedia.com\/definition\/25294\/real-time-blackhole-list-rbl#respond\"]}],\"articleSection\":\"\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.techopedia.com\/definition\/25294\/real-time-blackhole-list-rbl\",\"url\":\"https:\/\/www.techopedia.com\/definition\/25294\/real-time-blackhole-list-rbl\",\"name\":\"What is Real-Time Blackhole List (RBL)? 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