Kaspersky PURE User Guide - Kaspersky Lab

A D V A N C E D A P P L I C A T I O N S E T T I N G SImporting the list of allowed senders from address bookAddresses in the list of allowed senders can be imported from Microsoft Office Outlook / Microsoft Outlook Express(Windows Mail) address books.To import the list of allowed senders from an address book, perform the following steps:1. Open the main application window.2. In the top part of the window, click the Settings link.3. In the left part of the window, in the Protection Center section, select the Anti-Spam component.4. Click the Settings button in the Security level section in the right part of the window.5. In the window that opens, on the Exact methods tab, in the Consider message as not spam block, check theIf it is from an allowed sender box and click the Select button.The List of allowed senders window will open.6. Click the Import link, open the source selection menu and choose in it the Import from the Address Bookitem.7. Use the displayed window to select the necessary address book.REGULATING THRESHOLD VALUES OF SPAM RATESpam recognition is based on modern filtration methods, which allow training (see section "Training Anti-Spam" onpage 113) Anti-Spam to distinguish spam, probable spam and useful email. In doing so, every individual element of goodemails or spam is assigned a factor.When an email message enters your inbox, Anti-Spam scans the message using the iBayes algorithm for elements ofspam and good email. The component sums up the ratings of each spam (useful mail) item and calculates the resultingspam rate. The larger the spam rate, the higher the probability that such mail contains spam. A message is recognizedby default as useful mail if its spam rate does not exceed 60. If spam rate is higher than 60, such message is consideredto be potential spam. If the value exceeds 90, such message is recognized as spam. You can modify the thresholdvalues for the spam rate.To change the spam rate thresholds, perform the following steps:1. Open the main application window.2. In the top part of the window, click the Settings link.3. In the left part of the window, in the Protection Center section, select the Anti-Spam component.4. Click the Settings button in the Security level section in the right part of the window.5. In the window that opens, on the Expert methods tab, use the Spam rate section to configure the spam ratevalues using the corresponding sliders or entry fields.USING ADDITIONAL SPAM FILTERING FEATURESThe result of spam rate calculation can be affected by additional message characteristics, for example, a missingrecipient's address in the "To" field or a very long message subject (over 250 characters). When present in a message,such signs increase the probability of its being spam. Consequently, the spam rate will grow. You can select theadditional signs that will be taken into account during message analysis.To use additional signs increasing the spam rate, perform the following steps:1. Open the main application window.121