FIELD: information technology.
SUBSTANCE: text data of the electronic mail message to be filtered are obtained and it is determined if the text data contain a key word from a line contained in a line database used to filter messages. If so, it is further determined if the text data contain a line which corresponds to the key word contained in the line database. The electronic mail message is then identified as spam depending on the result of further determination and in accordance with predetermined identification rules, and the electronic mail message is blocked if it is spam.
EFFECT: high rate and efficiency of scanning, filtering electronic mail messages in real time even with a relatively large line database.
10 cl, 2 tbl, 2 dwg
