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Create an Allow List for Arsen Domains in Google Workspace

Whitelisting attack domains

Updated over a month ago

This procedure explains how to create an allow list of Arsen attack domains in Google Workspace and remove spam warning banners from employees’ inboxes.


1 - Objectives

  • Create an allow list for Arsen sender domains and email addresses.

  • Prevent spam warning banners on phishing simulation emails.

  • Ensure realistic email delivery even when using an upstream security filter.

  • Standardize configuration to minimize future adjustments.


2 - Prerequisites

  • Admin access to Google Workspace / Google Apps.

  • Use of an external filtering solution upstream of Gmail.

  • Ability to access Gmail spam, phishing, and malware settings in the Admin console.


3 - Access spam, phishing, and malware management rules

To begin:

  1. Sign in to the Google Workspace Admin Console.

  2. Go to Apps.

  3. Click Overview.

  4. Open Google Workspace.

  5. Select Spam, Phishing, Malware.

Google Admin interface showing the navigation path Apps → Google Workspace → Gmail to access spam, phishing, and malware settings.


4 - Build the allow list of emails or domains

4.1 - Gather domains or sender addresses

Identify the Arsen attack domains or sender addresses used in your simulations.

Arsen provides a list of all phishing domains.

Arsen interface – Phishing Domains section with a CSV export button.

4.2 - Create the rule

Name the rule, for example Arsen custom rules.

Check the following options:

  • Bypass spam filters for internal senders

  • Bypass spam filters for messages from senders or domains in selected lists

  • Bypass spam filters and hide warnings for messages from senders or domains in selected lists

Google Admin – “Edit setting” window showing custom rule options with bypass spam filters settings.

4.3 - Create the associated list

  • Click Create or Edit list.

  • Add the Arsen sender addresses or domains.

Google Admin popup “Bulk add addresses” allowing multiple domain or sender entries.

Click Add, name the list (ex. Arsen domains), and click Save list.

Google Admin – “Edit address list” window displaying the newly created “Arsen domains” list with Save button.


5 - Apply the rules

After saving the list:

  • Select the newly created list.

  • Add it to both rules:

    • Bypass spam filters and hide warnings for messages from senders or domains in selected lists

    • Bypass spam filters for messages from senders or domains in selected lists

Google Admin – custom rule selection showing “Use existing list” applied to spam bypass options.

Click Save.

The allow list is now active and visible in Gmail’s spam settings panel.

Google Admin – overview of active spam rules including the custom Arsen rule.

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