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A Domain Name System blocklist, Domain Name System-based blackhole list, Domain Name System blacklist ( DNSBL) or real-time blackhole list ( RBL) is a service for operation of mail servers to perform a check via a Domain Name System (DNS) query whether a sending host's IP address is blacklisted for email spam. [1]
Blacklist (computing) In computing, a blacklist, disallowlist, blocklist, or denylist is a basic access control mechanism that allows through all elements (email addresses, users, passwords, URLs, IP addresses, domain names, file hashes, etc.), except those explicitly mentioned. Those items on the list are denied access.
The Domain Block List [13] was released in March 2010 and is a list of domain names, which is both a domain URI blocklist and RHSBL. It lists spam domains including spam payload URLs, spam sources and senders ("right-hand side"), known spammers and spam gangs, and phish, virus and malware -related sites.
SORBS is owned by Proofpoint, Inc. SORBS (" Spam and Open Relay Blocking System ") was a list of e-mail servers suspected of sending or relaying spam (a DNS Blackhole List ). It had been augmented with complementary lists that include various other classes of hosts, allowing for customized email rejection by its users.
Domain name registry. A domain name registry is a database of all domain names and the associated registrant information in the top level domains of the Domain Name System (DNS) of the Internet that enables third party entities to request administrative control of a domain name. Most registries operate on the top-level and second-level of the DNS.
e. The Domain Name System ( DNS) is a hierarchical and distributed name service that provides a naming system for computers, services, and other resources on the Internet or other Internet Protocol (IP) networks. It associates various information with domain names (identification strings) assigned to each of the associated entities.
Security graph is a data-driven threat intelligence engine that automatically updates malware, botnet, and phishing domain and IP blacklists enforced by Umbrella. The data is sourced from the DNS requests OpenDNS receives, plus the BGP routing tables that are managed by OpenDNS's network operations center.
The data included spam sources, open proxies, open relays, DDoS drones, Usenet spam sources, and the controversial Shoot On Sight listing policy. The IRCbl list was a reduced version of the DNSbl that does not include spam sources or other data unnecessary for use in IRC networks and other chat systems. The RHSbl list was domain-based rather ...