The Content Filtering feature allows administrators to filter email messages based on the extension of their attachments.
Once you have set a list of potentially suspicious files, configure the action to take on them.
You can also filter email attachments with double extensions.
Consider files with the following extensions dangerous: Select this checkbox to classify files with certain extensions as dangerous. Then, use the Add, Delete, Clear and Restore buttons to set the list of extensions to block.
Consider attachments with double extensions dangerous, except for the following: Select this option to block all messages containing files with double extensions, except for the ones you allow. Use the Add, Delete, Clear and Restore buttons to configure the list of double extensions to allow.
Action to take: Select whether you want to delete files with dangerous attachments or move them to a specific folder. This can very useful to store and analyze those files later in order to make the appropriate adjustments to the list of dangerous extensions.
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Anti-spam protection for Exchange Server