Using Attachment MIME Content Type Criteria

The Attachment is "MIME content type" criteria allows you to create rules that take actions on messages based on the MIME content-type of attachments a message contains.

Note:

Where the Attachment is "MIME content type" criteria makes decisions based on the MIME content-type indicated, the Attachment is "true file type" criteria scans the headers of the actual attached files themselves for the identifying signatures.

  1. On the Scanning Criteria tab, click Advanced.
  2. Select the Attachment is "MIME content type" criteria.
  3. Click the "MIME content type" link.

    The Attachment MIME Content Type screen appears.

  4. From the drop-down list, select Selected MIME content types or Not selected MIME content types.
  5. Select the MIME content types for Trend Micro Email Security to match on.
  6. If you want to block attachments by explicit MIME content types, type the names of the MIME content types to block, under the Other MIME content types text field.
    Tip:

    The following examples are valid:

    • 3dm or *.3dm

    • 3dmf or *.3dmf

Parent topic: Configuring Content Filtering Criteria