Home > Configuring the protection for Windows/Linux > Exchange Server protection settings > Antivirus protection for Exchange Server > Intelligent mailbox scan
The intelligent mailbox scan runs during periods of low server activity, scanning the email messages stored in the organization's Exchange Server.
In addition, it only scans messages that have not been previously scanned and contain attached files.
Disabling the mailbox protection also disables the intelligent mailbox scan.
Background scans work in the same way as mailbox scans.
Background scans are not available for Exchange Server 2013.