Add Outgoing Blacklist Filtering Rule

  1. In the Admin Level or Domain Level Control Panel, select Outgoing - Protection Settings > Blacklist filtering rules.
  2. The Domain Rules tab is displayed in the Outgoing Blacklist filtering rules page.

  3. Click on Add rule.
  4. The dialog that is displayed here depends on whether you have enabled or disabled the 'Use advanced custom filtering rules' option in the User profile page. For more information, see Manage Your Admin User Profile or Manage Your Domain User Profile.

    If the option is Inactive you will see the 'Add a new simple Blacklist filtering rule' dialog:

    If this is Active, you will see the 'Add a new advanced Blacklist filtering rule' dialog:

  5. Choose from the following filters:
  6. Field/Option Description
    Simple page
    Domain (only displayed at Admin Level) Select the domain the rule will apply to.
    Rule name Add the name of this rule
    Match Use the Match fields to structure your rule
    Advanced page
    Domain (only displayed at Admin Level) Choose the domain you want to apply the rule to from those available in the Domain dropdown. (When you are accessing this page at the Domain Level, the system applies the rule to the logged in domain).
    Rule name Enter the name you want to give this rule in the Rule name field.
    Priority In the Priority field enter a number to represent the priority given to the rule.

    Rules are evaluated by Priority from the lowest number to the highest number, until one matches or all rules have been checked. All Whitelist rules are checked before Blacklist rules.

    Header name If you want to restrict the check to a particular header, enter the Header name. You may enter a regular expression here, if required.
    Regular expression

    Enter the regular expression for the rule in the Regular expression field.

    Tip - Use the Cheatsheet panel on the right of the page for examples of how to build your regex.

    Match Choose what you want the rule to match. The following options are available:
    Flags The following flags are available:
    • i (ignore case)
    • m (^ and $ match start and end of line),
    • s (. matches newline)
    • x (allow spaces and comments)

  7. Click Save when finished.

Unfortunately, the Technical Support team is unable to support any customisation of the predefined Rulesets or those you build yourself.

Due to the potential complexity in building a regex pattern, we advise that only users with regex experience should attempt to create new rules or customise existing ones.