The attachment filtering functionality is not applied to outgoing email messages.
Malicious applications can be distributed in the form of attachments in email messages. You can configure filtering based on the type of message attachments so that files of the specified types are automatically renamed or deleted. By renaming an attachment of a certain type, Kaspersky Endpoint Security can protect your computer against automatic execution of a malicious application.
To configure filtering of attachments:
In the main application window, click the Settings button.
In the application settings window, select Essential Threat Protection → Mail Threat Protection.
In the Security level section, click the Settings button.
The Mail Threat Protection window opens.
In the Mail Threat Protection window, select the Attachment filter tab.
Do one of the following:
If you do not want the Mail Threat Protection component to filter message attachments, select the Disable filtering option.
If you want the Mail Threat Protection component to rename message attachments of the specified types, select the Rename attachments of selected types option.
If you want the Mail Threat Protection component to delete message attachments of the specified types, select the Delete attachments of selected types option.
If you selected the Rename attachments of selected types option or the Delete attachments of selected types option during the previous step, select the check boxes opposite the relevant types of files.