KIBLIX 2003

Mark Martinec was born and educated in Ljubljana. He graduated at the Faculty of Electrical engineering, where he specialised in Computer science and informatics. Since then he works for the Institute 'Jozef Stefan' in Ljubljana and at present also for the Network Infrastructure centre IJS. For several years he also worked at the Department for Computer science and Informatics.

Mark developed early graphical hardware and implemented standard graphical library GKS into several drivers for graphical devices of that times. He is the author of software for interactive planning of printed circuits (with drivers for professional illumination units), which had been in use for many years at the Institute Josef Stefan. He was active in several fields of software development (simulation of electronic circuits, compilers, macro processors, processing and inserting texts, synchronization of time, etc).
He was a guest in the Computer Laboratoraty of the Cambridge University, Great Britain, where he contributed to developing and examining integrated circuits for Cambridge ring, which, at that time was competitive to Ethernet.
He is very active in popularising computer science among students. This is done by teaching, organising summer schools and national competitions in computer knowledge. He is a co-author of a collection of exercises.

Subject

Amavisd-new - High performance antivirus and antispam protection for larger central mail servers

Amawisd-new is an open-source program solution for Unix and Linux mail servers in the field of antivirus and antispam protection. It is very suitable for settings that need to ensure reliability and permanently high permeability of e-mails. Scanning of viruses is done by external (tipically comercial) programes, but the recognising of UBE is in the hands of open program equipment SpamAssasin. Amavisd-new is in charge of communication with a mail server and for effective connection of all the components.

Characteristics and extension of the problems concerning viruses and annoying spam mail, their foundation and solutions.
Mechanisms through which amawisd-new can connect to a mail server and external programes and all possible ways of installing the protective/filtering program equipment into mail system.
Some supplementary open source solutions for statistical data survey, interfaces to user's settings and for handling with quarantine.
System administration: transportation of the messages through systems, order of precedence for decisions and action, usual models for setting up a system, important settings and possibilities, individual settings for receivers or sub-domains (SQL, LDAP, statistical charts).
Suitable choice of policy to react to annoying and infected mail: notes to senders, administrators or receivers, withholding messages (quarantine), delivery of mails with warnings, automatic classification into mail sub-folders. Possible reaction to viruses, forbidden type or attachment names and to commercial messages. How can a solution of a local problem cause a new, global one.
Security for the final user and mail server security: what can we expect from the system, where must we pay attention to dangers and what mechanisms are available for protection.
Concern for a high permeability: recognising narrow throats and retardatory operations, the most important settings that influence permeability, adjusting operating system to an application. What efficiency can we expect from the contemporary Unix system. What to do, if a computer is overloaded.