Kaspersky Security 9.0 for Microsoft Exchange Servers MR 7

Configuring an increase in the spam rating of messages

You can configure the Anti-Spam settings affecting detection of a special message property - its spam rating. This special message property is assigned to messages based on their scan results. By default, Anti-Spam protection applies the low severity level. Depending on the severity level and the spam rating assigned after a scan, a message can be tagged as Spam or Probable spam.

Anti-Spam settings allow you to configure the application to increase the spam rating of a message based on the analysis of its sender's email address and message subject, as well as when the message is written in a foreign language.

To configure the application to increase the spam rating of a message based on the analysis of its sender's address:

1. Perform the following steps in the Management Console tree:
   • To configure the application to increase the spam rating of messages for an unassigned Security Server, maximize the node of the relevant Security Server
   • To configure the application to increase the spam rating of messages for Security Servers belonging to a profile, maximize the Profiles node and inside it maximize the node of the profile for whose Security Servers you want to configure the application to increase the spam rating of messages.
2. Select the Server protection node.
3. In the workspace, on the Protection for the Transport Hub role tab, expand the Spam rating detection settings configuration section.
4. In the Increase spam rating if configuration section, select the check boxes for the following settings as necessary:
   • "To" field contains no addresses. The spam rating of a message will be increased if its "To" field is empty.
   • Sender's address contains numbers. The spam rating of a message will be increased if the address of its sender contains digits.
   • Sender's address in the message body does not contain the domain part. The spam rating of a message will be increased if the address of its sender contains no domain name.
5. Click the Save button.

To configure the application to increase the spam rating of messages based on the analysis of the message subject:

1. Perform the following steps in the Management Console tree:
   • To configure the application to increase the spam rating of messages for an unassigned Security Server, maximize the node of the relevant Security Server
   • To configure the application to increase the spam rating of messages for Security Servers belonging to a profile, maximize the Profiles node and inside it maximize the node of the profile for whose Security Servers you want to configure the application to increase the spam rating of messages.
2. Select the Server protection node.
3. In the workspace, on the Protection for the Transport Hub role tab, expand the Spam rating detection settings configuration section.
4. In the Increase spam rating if the subject contains configuration section, select the relevant check boxes for the following settings:
   • More than 250 characters. The spam rating of a message will be increased if its subject contains more than 250 characters.
   • Many blanks and/or dots. The spam rating of a message will be increased if its subject contains multiple spaces and / or dots.
   • Time stamp. The spam rating of a message will be increased if its subject contains a digital ID or a time stamp.
5. Click the Save button.

To configure the application to increase the spam rating of messages based on the analysis of its content language:

1. Perform the following steps in the Management Console tree:
   • To configure the application to increase the spam rating of messages for an unassigned Security Server, maximize the node of the relevant Security Server
   • To configure the application to increase the spam rating of messages for Security Servers belonging to a profile, maximize the Profiles node and inside it maximize the node of the profile for whose Security Servers you want to configure the application to increase the spam rating of messages.
2. Select the Server protection node.
3. In the workspace, on the Protection for the Transport Hub role tab, expand the Spam rating detection settings configuration section.
4. In the Increase spam rating if the message language is configuration section, select the check boxes for the languages whose presence in a message you consider to be a sign of spam:
   • Chinese, if you are not expecting mail in this specific encoding.
   • Korean, if you are not expecting mail in this specific encoding.
   • Thai, if you are not expecting mail in this specific encoding.
   • Japanese, if you are not expecting mail in this specific encoding.
5. Click the Save button.