Enable email spam scoring and filtering

  • Release version: Australia
  • Updated March 12, 2026
  • 1 minute to read
  • Install the Email Filter (com.glide.email_filter) plugin to install email filtering within the instance. This filtering identifies existing headers, which enables you to decide what to do with the email based on the associated header. Alternatively, set com.glide.email_filter to false.

    The Email Filter (com.glide.email_filter) plugin installs email filtering within the instance. This filter identifies existing headers, which enables the administrator to decide what to do with the email based on the associated header. The plugin adds a header to each message, which can be used for filtering within the instance. This feature is very helpful for filtering out spam.

    Note:
    Please make sure prerequisite property glide.email.read.active is set to true, as this control only applies when inbound email is enabled.

    Ensure that the plugin com.glide.email_filter is activated when the property glide.email.read.active is set to true.

    More information

    Attribute Description
    Configuration name
    • com.glide.email_filter
    • glide.email.read.active
    Configuration type
    • Plugin (All > System Definition > Plugins)
    • System Properties (/sys_properties_list.do)
    Data type
    • Plugin
    • Boolean
    Recommended value
    • Plugin is active
    • true
    Default value <none>
    Fallback value
    • N/A
    • true
    Category File and resources
    Security risk
    • Severity score: 8.1
    • CVSS rating: High
    • Security risk details: Enabling and configuring email filtering is essential for reducing exposure to spam and maintaining system integrity.
    Functional impact Email is never filtered, blocked, or quarantined from the instance as part of spam scoring. It is only scored and then sent on to the instance. All filtering is done within the instance with the Email Filters plugin.
    Dependencies and prerequisites

    Before setting this property:

    Set the glide.email.read.active property to true. To learn more, see Enable using your own POP3 server.