Kaspersky Lab kaspersky mail gateway 5.5 ユーザーガイド

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Advanced application settings
 67
 
• 
Limit the maximum size for messages received by the server (Maximal-
IncomingMessageSize
 option) and the total number of messages 
received during one mail session (MaximalIncomingMessagesPer-
Session
 option).  
• 
Limit the number of recipients of a single message (MaximalIncoming-
RcptsPerMessage
 option). This parameter prevents spam addressed to 
your users). 
• 
Maximum size of a single mail session (MaximalIncomingSessionSize 
option).  
• 
Maximum number of simultaneous connections from 
 
the same IP (or host) that are processed by the Receiver and by the 
Sender modules (MaximalIncomingSessionsPerlP and 
MaximalOutgoingSessionsPerHost options respectively). 
• 
Minimum size of available disk space on the partition where the working 
queue of the application is preserved (the MinimalQueueFreeSpaceSize 
option). If during application operation the queue size increases making 
available space smaller than this value, the application will temporarily 
suspend receipt of new messages until the value returns to the specified 
limits. 
If the mail traffic at your server exceeds the specified limits, we recommend that 
you decrease the number of objects simultaneously processed by the AV module 
(AntiviralSessions parameter) and the number of hops for a single message 
(MaximalIncomingMessageSize option). This increases application 
performance and message processing speed. 
If your server has a low-speed Internet connection, the following actions are 
recommended: 
• 
Decrease the number of objects simultaneously processed by the 
Receiver and Sender modules 
(IncomingSessions 
and 
OutgoingSessions options).  
• 
Decrease the maximum number of incoming messages received during a 
single session (MaximalIncomingMessagesPerSession option). 
6.2. Setting up connection receiving 
interfaces 
The set of interfaces and ports, used by the application to receive the 
connections, is defined by ListenOn parameter in the [smptgw.network] 
section of the application configuration file. By default, Kaspersky Mail Gateway 
listens for connection on port 25 using all available interfaces.