Exim configuration filter to allow some but not all "suspicious" document types

As a System Administrator I would like to have greater control over the Exim configuration filter setting for “Attachments: Filter messages with dangerous attachments” with a checkbox menu of common document file types to permit or exclude, instead of the current on/off setting, so that administrators can have greater control over which file types are excluded.

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The Exim configuration filter setting for "Attachments: Filter messages with dangerous attachments" is only ON or OFF. There needs to be an option to allow certain common document types which cpanel considers dangerous, while still blocking others. Perhaps with a checkbox menu for filetypes to permit or exclude.