Targeted Threat Protection - URL Protect - Bypass Policies

This article provides a guide on how the URL Protect Bypass Policy works. A URL Protect Bypass Policy allows you to exclude specific senders or recipients from a URL Protection definition. For example, where a URL Protect policy is enabled for messages sent from everyone to all internal recipients, but you want a specific team to be exempt.

If you want to add a domain or URL to a block or allow list, you can configure Managed URLs in the Administration Console. See Managed URLs.

Configuration of the Bypass Policy

To configure a URL Protect Bypass Policy:

  1. Log in to the Mimecast Administration Console
  2. Select the Policies | Gateway Policies menu item.
  3. Click on URL Protection Bypass.
  4. Either select the:
      • Policy to be changed.
      • New Policy button to create a policy.
  1. Complete the Options section as required:
Field / Option Description
Policy Narrative Provide a description of the policy to allow you to easily identify it in the future.
Select Option Select the URL Protect definition from the drop-down that contains the bypass criteria.
  1. Complete the Emails From and Emails To sections as required:
Field / Option Description
Addresses Based On

Specify the email address characteristics the policy is based on. This option is only available in the Emails From section. The options are:

  • The Return Address (Mail Envelope From): This default setting applies the policy to the SMTP address match, based on the message's envelope or true address (i.e., the address used during SMTP transmission).
  • The Message From Address (Message Header From): Applies the policy based on the masked address used in the message's header.
  • Both: Applies the policy based on either the Mail Envelope From or the Message Header From whichever matches. When both match, the specified value of the Message Header From will be used.
Applies From / To

Specify the Sender characteristics the policy is based on. For multiple policies, you should apply them from the most to the least specific. The options are:

  • Everyone: Includes all email users (i.e., internal and external). This option is only available in the Emails From section.
  • Internal Address: Includes only internal organization addresses.
  • External Address: Includes only external organization addresses. This option is only available in the Emails From section.
  • Email Domain: Enables you to specify a domain name to which this policy is applied. The domain name is entered in the Specifically field.
  • Address Groups: Enables you to specify a directory or local group. If this option is selected, click on the Lookup button to select a group from the Profile Group field. Once a group has been selected, you can click on the Show Location field to display the group's path.
  • Address Attributes: Enables you to specify a predefined Attribute. The attribute is selected from the Where Attribute drop-down list. Once the Attribute is specified, an attribute value must be entered in the Is Equal To field. This can only be used if attributes have been configured for user accounts.
  • Individual Email Address: Enables you to specify an SMTP address. The email address is entered in the Specifically field.
  1. Complete the Validity section as required:
    Field / Option Description
    Enable / Disable Use this to enable (default) or disable a policy. If a date range has been specified, the policy will automatically be disabled when the end of the configured date range is reached.
    Set Policy as Perpetual If the policy's date range has no end date, this field displays Always On, meaning that the policy never expires.
    Date Range Use this field to specify a start and/or end date for the policy. If the Eternal option is selected, no date is required.
    Policy Override This overrides the default order that policies are applied. If there are multiple applicable policies, this policy is applied first unless more specific policies of the same type are configured with an override.
    Bi-Directional If selected, the policy is applied when the policy's recipient is the sender, and the sender is the recipient.
    Source IP Ranges (n.n.n.n/x) Enter any required Source IP Ranges for the policy. These only apply if the source IP address used to transmit the message data falls inside or matches the range(s) configured. IP ranges should be entered in CIDR notation.
  2. Click on the Save and Exit button.

See Also...

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