User Guide

32 Kaspersky
®
SMTP-Gateway 5.5 for Linux/Unix
depending on whether this group contains both the sender’s and the recipient’s
addresses present in the MAIL FROM and RCPT TO commands.
The administrator can specify individual rules for processing of each mail
message depending on the group of recipients/senders. Therefore, it is
particularly important that the addresses must be associated with a correct
group.
While processing a message, the application searches through the list of
addresses for each specific group. If it finds a matching combination of the
sender/recipient addresses, the rules defined for this group will be applied to the
email message.
The anti-virus functionality of Kaspersky SMTP-Gateway depends on
the configuration file settings. You can make configuration changes to
the file either locally or remotely (using the Webmin remote
administration module).
The configuration file contains the [smtpgw.policy] section that implicitly defines
the policy group, which determines the default rules for processing of email
messages.
All parameters specified in that section and the section itself are
mandatory.
The [smtpgw.policy] section does not contain the names of senders and
recipients. Rules defined in [smtpgw.policy] are applied to all messages, except
for those belonging to other groups explicitly described as
[smtpgw.group:group_name] sections.
All parameters in [smtpgw.group:group_name] sections are optional. If a
parameter value in such section is not specified, it will be taken from an identical
option in the [smtpgw.policy] section.
If the configuration file included into the application installation package is used,
then the mail messages will be processed according to the following rules
(defined by the policy group):
• Scan all mail messages for viruses.
• Deliver only clean messages to the recipients.
• Block delivery for messages containing infected, suspicious, password-
protected objects and objects, which caused errors during their analysis.
• Notify recipients and the administrator about infected, disinfected,
suspicious, protected or filtered objects in messages and the objects,
which caused errors during their analysis.
You can change the parameters of the policy group or create new groups. If you
would like to process email messages belonging to different groups of
recipients/senders using different rules, you will have to create several groups.