Dynamic Port 25 Blocking to Control SPAM Zombies

This paper presents the results of a case study in which outbound SPAM, here referring to excessive amounts of bulk-generated email, is suppressed using dynamic Port 25 blocking. Detection, blocking, and remediation are fully automated, relieving the provider's support center, and sparing the 99% of users who are non-abusing from any impact at all. SPAM is typically generated by an infected PC, referred to as a Zombie, whose owner is most often unaware of the infection.

• Type: Conference
• Year: 2006
• Where: CEAS
• Authors: Jonathan Schmidt
• Keywords: CEAS 2006, Excessive Amounts, Internet Technology, Outbound Spam, Provider's Support Center