Chapter 4 FortiOS Carrier : MMS Security features : Sender notifications and logging : MMS logging options
  
MMS logging options
You can enable logging in an MMS protection profile to write event log messages when the MMS protection profile options that you have enabled perform an action. For example, if you enable MMS antivirus protection, you could also use the MMS protection profile logging options to write an event log message every time a virus is detected.
To record these log messages you must first configure how the FortiOS Carrier unit stores log messages.
To configure MMS content archiving, go to Security Profiles > Carrier > MMS Profile. Select Create New or select the Edit icon beside an existing profile. Expand MMS Bulk AntiSpam Detection > Logging. Complete the fields as described in the following table and select OK. For more a detailed list of options, see “Logging”.