Requirements for the List Management for User List to be enabled. Check if the user is granted to have its own approved/blocked senders list for Anti-Spam service.

Email Security.cloud

To check if user level lists are already enabled on your account

1. Within the client portal, navigate to Services > Antispam
2. Click on the drop down that says Global Settings.
3. From the drop down list, select any of the domains associated with your Email Security.cloud account.
4. If user lists are enabled on your account, a tab called List Management will appear and it can be used to enable lists for users of that domain. Now you can proceed to manage which users have access to user level lists.
5. If the List Management tab doesn't appear, you will need to contact Symantec Technical Support to have the option enabled on your account. Before contacting support you should ensure that:

• All Address Registration lists are up to date for all domains
• Address Registration Protection is ON for all domains

To turn on Address Registration for your domains

1. Navigate to https://clients.messagelabs.com and log in with the primary username for your account
2. Within the client portal, navigate to Services > Platform
3. If any domains are set to "Off", you should enable Address Registration for those domains by clicking the word Off.
4. A pop-up window will appear and you can confirm that you wish to enable Address Registration 

Once this is complete, you can open a case with Symantec Technical Support to request that User Level Approved and Blocked Senders controls are enabled on your account.  Once they have informed you that this has been completed, you can then move to the next stage to manage the User Level List options.

To manage which users have access to user level lists

1. Within the client portal, navigate to Services> Antispam
2. Click on the drop down that says Global Settings.
3. Click the domain where you wish to enable user level lists.
4. Click "User List Control Show/Hide"

A section expands, displaying additional controls

• If you wish all users to have access to their own lists, you can simply select the option: 

Click "ALL EXCEPT the selected email addresses will have user control"

• If you wish to only give control to specific users, you can search for them and add them to the list on the right and use:

ALL of the selected email addresses will have user control

You may wish to click the Merge User Approved and Blocked Senders lists with Global lists.  This will ensure that the global lists will still apply to users who have their own lists.  If the Replace Global User Approved and Blocked Senders lists with User lists option is selected, then users will only be affected by what their own list contains and the Global Level list will be ignored for them.

Once you have made your selections, click the Save and Exit button.

Note: Users may not see the lists immediately after they are enabled.  It may require that a user log into the Email Quarantine portal and logout using the logout button before the tabs will appear for them.