SECURING THE EMAIL SERVICES New System for Secure Managing the Organization's Mail Service

摘要

In this paper new system is presented for securing the email service, minimizing the risks associated with spam and malicious software associated with the email messages, valid for any organization. To build it, several free software tools under GPL license are used, integrated over a generic hardware platform. The approach has been the typical of an integration project. The concrete needs have been identified, related to email threats, free software tools under GPL have been identified that meet our needs and the integration tasks have been made, suggesting hardware and software architecture to support our objectives. One crucial criterion for the selection has been that the tools must provide working information records, i.e. file logs and tools to treat them for the different covered subsystems. Several tools have been developed also to complete the original functionality of them. The resulting system, nowadays in use in a big company in Spain, is a flexible and effective one, that filters quickly and exhaustively every incoming and outgoing message, eliminating successfully more than 80% of the received messages, that result to be spam or malware.