An efficient scheme for identifying spam bots and terminate mailing

Abstract

E-Mail or Electronic Mail is the process of transmitting messages over the communication network. Now-a-days e-mail usage is rapidly increased for exchange message that may be for business or personal. The internet mail server spam message delivery is the most common issue. Most of the modern spam filtering is deployed only on the receiver side. They are good at filtering spam messages for the end users. But spam messages still keep wasting internet bandwidth and the storage space of mail servers. To address this problem, we detect spamming bots in the email server based on blooming filter in the sender side. This work tracks the number and the uniqueness of the recipient's email addresses in the outgoing mail from each individual internal host as the features for detecting spamming bots. Due to the huge number of recipient's email addresses observed in the SMTP sessions, we store and manage them efficiently in the bloom filters.