Configure Restrict delivery settings for your domain or organizational unit:

  1. Sign in to the Google Admin console
  2. From the dashboard, go to Apps > Google Apps > Gmail > Advanced settings
  3. In the Organizations section, highlight your domain or the organizational unit for which you want to configure settings (see Configure advanced settings for Gmail for more details).
  4. Scroll down to the Restrict delivery section:
    • If the setting's status is Not configured yet, click Configure (the "Add setting" dialog box displays).
    • If the setting's status is Locally applied, click Edit to edit an existing setting (the "Edit setting" dialog box displays), or click Add another to add a new setting (the "Add setting" dialog box displays).
    • If the setting’s status is Inherited, click View to view the inherited setting, or click Add another to add a new setting (the "Add setting" dialog box displays).
  5. When you're finished making changes, click Add setting or Save to close the dialog box.

    Note: Any settings you add will be highlighted on the "Email settings" page.

  6. Click Save changes at the bottom of the "Email settings" page.