User Guide

96 Kaspersky Anti-Spam 3.0
• kas_connect_timeout – maximum time (sec) for establishing a
connection with the filtering server.
• kas_data_timeout – maximum time (sec) for data exchange sessions
with the filtering server.
• kas_default_domain – name of the mail domain used in the address if
the original domain is not specified.
• kas_filtering_size_limit – maximum size (in KB) of a message that can
be transferred to the filtering server. Messages of larger sizes are
bypassed without processing.
• kas_on_error – mode of handing errors (unable to establish connection
with the filtering process, data exchange timeout is exceeded, etc.).
Possible values:
• reject – reject an incoming message, return the 5xx code
during an SMTP session;
• tempfail – temporarily reject an incoming message, return the
4xx code during an SMTP session (default value);
• accept – accept a message;
• kas_log_level – detalization level of the log file. The data is recorded in
the Exim debugging mode.
Note the following specifics of using the kas-exim module with the Exim mail
server:
• kas-exim, as well as kas-milter, does not create message copies during
processing. This means that if a message is destined to several recipients
that belong to different groups with various processing rules, the message
is processed in accordance with the rules defined for each of these
groups.
• If a message is destined to several recipients and for some of these
recipients message delivery is prohibited (reject message action),
whereas for other recipients messages are accepted (accept message
action), the sender is not notified (i.e. a bounce message is not sent) that
the message could not be delivered to some of the recipient.