Chapter 4 FortiOS Carrier : MMS Security features : MMS virus scanning : Server comforting
  
Server comforting
Server comforting can be selected for each protocol.
Similar to client comforting, you can use server comforting to prevent server connection timeouts that can occur while waiting for FortiOS Carrier to buffer and scan large POST requests from slow clients.
The Interval is the time in seconds before client and server comforting starts after the download has begun, and the time between sending subsequent data.
The Amount is the number of bytes sent by client or server comforting at each interval.