Exchange 2013 comes with a default anti-malware for the mailbox role. Let’s see how we can disable it.
The built-in anti-malware in 2013 mailbox role is pretty basic and Exchange admins might think of replacing it with a full fledged one. Before a new product is introduced, the default anti-malware has to be disabled.
There are no options in the EAC to disable it.
Shell to the rescue! Navigate to the scripts directory by running cd $exscripts and run the built-in script (Disable-AntiMawlareScanning.ps1) to disable the anti-malware.
Restart the Exchange Transport service for the changes to take effect.
To enable it back, run Enable-AntiMalwareScanning.ps1 from the scripts directory.