Ip Reputation List

• Whois is a basic network utility that is typically used to find out who has registered for the use of a particular network domain name or who controls a particular numeric IP address.
• Persons or organizations that register for the use of domain names or IP address blocks are required to provide identifying information about themselves and this information is published in the whois databases, which is accessible to the public via software.
• Blocklist operators are often accused of being "vigilantes" or "censors" although it is the action of the blocklist user, rather than the blocklist operator, that results in denial of service to blocklisted ips.
• This differs from a block list in that it actively boycotts tcp/ip addresses known to send spam or host spammers.
• Tarpitting is traffic monitoring to identify remote IP addresses sending a suspiciously large volume of email.
• The dotted-quad is the customary or "canonical" form for IP addresses, although they can also be given in other numerical forms (which spammers sometimes use in order to deflect scrutiny from their resources).
• When the mail host queries a dnsbl for a particular host name or address, it receives not an ip address, but a coded answer resembling an ip address.
• A name server that is assigned within DNS to be responsible for knowing the IP addresses of all hosts in a given domain is called an authoritative name server.
• Fast rotating of ip addresses is used by some spammers to keep their websites from being traced and shut down.
• IP (internet protocol) is the set of communications procedures (officially defined in IETF RFC 791) that underlie the internet.
• IP provides for the transfer of packets of data between computers on large networks.
• Additional "higher-level" protocols (such as TCP, HTTP, and SMTP) work with IP to define what these packets must look like and how they are to be processed once received.

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