Spam Detection Using Network-Level Characteristics

Synonyms

Antispam based on sender reputation

Definition

Spam Detection Using Network-Level Characteristics is a type of method that is used to determine whether a given email is unsolicited based on the network characteristics of the sender, for example, the IP address, pattern of SMTP transactions, and the associated Autonomous System Number (ASN).

Background

Unsolicited email, also referred to as Spam, is one of the pernicious problems on Internet today. There have been numerous efforts to design an automated mechanism to determine whether an email is unsolicited or not. These methods can have two flavors: One that is based on the email’s content, and the other based on the network-level characteristics of the sender.

Theory and Applications

Senders could be identified by sender’s email ID, IP address, or domain. For instance, PGP [4,  9] is an email ID-based authentication technique where a third-party server maintains individual users’ public keys. A sender’s signed emails can be...