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Configuring the High-Risk Attachment rule of Hosted Email Security (HES) to not delete legitimate mails

    • Updated:
    • 16 Aug 2016
    • Product/Version:
    • Hosted Email Security 2.0
    • Platform:
    • N/A N/A
Summary

Upon checking the mail tracking logs, you find out that your email was deleted by the High-Risk Attachment rule.

This article shows you how to stop the rule from deleting what you consider a legitimate mail.

Details
Public

As a workaround to the High-Risk Attachment rule, you can do any of the following options:

  1. Log on to the HES console.
  2. Click Inbound Protection tab then Policy.
  3. Under Rules status, look for "High-risk attachment" and under the Status column, click the Check icon.

    High-risk Attachment rule

    Click image to enlarge.

    The said icon will now become an x-mark. This means that the rule has been disabled.

    You may do the same procedure to the Outbound High-risk attachment rule if you want to.

  1. Log on to the HES console.
  2. Click Inbound Protection tab then Policy.
  3. Select the High-Risk Attachment rule.
  4. Go to Recipients and Senders > Recipient Exceptions

    Recipients and Senders

    Click image to enlarge.

  5. Enter the email address or the domain of the sender on the textbox and click Add.

    Enter email address or domain

    Click image to enlarge.

    The email addresses or the domains will be added to the Selected column.

  6. Click Save.
  1. Log on to the HES console.
  2. Click Inbound Protection tab then Policy.
  3. Select the High-Risk Attachment rule.
  4. Go to Scanning Criteria > Advanced.

    Scanning Criteria

  5. Go to the selected "Attachment is" checkbox then click name or extension. The Attachment Names window will appear.

    Click name or extension

  6. Tick the checkbox next to File extensions to block (recommended). A list of extensions will be shown.

    File extensions to block (recommended)

  7. Uncheck all the extensions you want to be excluded from scanning.
  8. Click Save
  9. Go back to Advanced section then navigate to the selected "Attachment is" checkbox then click MIME content-type. The Attachment MIME Type window will appear.

    Click MIME content-type

  10. Uncheck all the MIME types you want to be excluded.

    Attachment MIME types

  11. Go back to Advanced section then navigate to the selected "Attachment is" checkbox then click true file type. The Attachment True File Type window will appear.

    Click true file type

  12. Uncheck all the file types you want to be excluded.

    Attachment true file type

  13. Click Save.
Premium
Internal
Rating:
Category:
Configure; Troubleshoot
Solution Id:
1058736
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