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Use the Scan Restrictions tab to configure the ScanMail actions for compressed files and files with special or unknown behavior.
To configure scan restrictions:
  1. Under Scan Options, click the Scan Restrictions tab.
  2. Select the scan action for compressed file, special, or unknown file behavior:
    • Exceed maximum extracted file size: restricts ScanMail to scan compressed files that matches the Maximum extracted file size setting
      Specify the Maximum extracted file size in kilobytes (KB).
    • Exceed maximum compression level: restricts ScanMail to scan compressed files that match the Maximum compression level setting.
      Select the limit of compression layers to scan by choosing the Maximum compression layer. For example, if you want ScanMail to scan only files that have been compressed and then recompressed (compression layer is equals 2), set the Maximum compression layer to 3.
      Note
      Note
      ScanMail can scan up to 20-layers of compression.
    • Password-protected files: restricts ScanMail to scan files that are password-protected.
    • Unknown reason(s) why attachments could not be scanned: allows ScanMail to perform a scan action for unscannable files automatically.
  3. In the Notification section, select the notification options for when a file matches the attachment filters.
  4. In the Email Stamp section, define the safe email stamp settings.
  5. Click Save & Close.
Keywords: compression layer,scan restrictions