In the left part of the window, in the Anti-Virus protection section, select the Mail Anti-Virus subsection.
In the right part of the window, the settings of the Mail Anti-Virus component are displayed.
Click the Settings button.
The Mail Anti-Virus window opens.
Select the General tab.
Perform the following in the Scan of compound files section:
If you want Mail Anti-Virus to skip archives that are attached to messages, clear the Scan attached archives check box.
If you want Mail Anti-Virus to skip message attachments that are larger than N megabytes in size, select the Do not scan archives larger than N MB check box. If you select this check box, specify the maximum archive size in the field that is opposite the name of the check box.
If you want Mail Anti-Virus to scan message attachments that take more than N seconds to scan, clear the Do not scan archives for more than N sec check box.