Step-by-Step Guide

1 Log in to the Barracuda Email Gateway Portal

Access the portal using your Microsoft 365 credentials.

[Screenshot: Barracuda login page]

2 Navigate to Allow/Block Lists

Click on "Settings" in the main menu, then select "Allow/Block Lists".

[Screenshot: Settings menu with Allow/Block Lists option]

3 Add a New Entry

Click "Add New" and enter the email address or domain you want to allow or block.

[Screenshot: Add new entry form]

4 Configure Entry Settings

Select whether to allow or block the entry, and choose any additional options like expiration date.

[Screenshot: Entry configuration options]

5 Save Changes

Click "Save" to apply your changes. The new rule will take effect immediately.

[Screenshot: Save confirmation]

You can add individual email addresses or entire domains to your lists
Allow List entries take precedence over Block List entries
Changes to the lists take effect immediately
You can set expiration dates for entries if you only want to allow/block temporarily
For shared mailboxes, these settings apply to all users with access to the mailbox

How to Manage Allow/Block Lists