Select the action for the system to take on an email account when it detects a potential spammer

This is the section from the release notes :

It describes how to release them, but I am unsure if they will be available in the WHM mail queue to be inspected.

As far as the alert to root - it looks like that is managed by the Tweak Settings

Hope this helps.​

 

Is there a way to whitelist selected account?

I have dozens of accounts on the server, but one of them is sending a newsletter to thousands of users. The "Number of unique recipients per hour to trigger potential spammer notification" is set to 500 and is global.
If I change this value to 5000 or 10000, it will affect all accounts on the server, not just the one sending a newsletter to thousands on users.


In other words, I'd like to exempt account "someaccount" from mail hold if the mailing is too large, but have this security feature still applied to other accounts.

 

AFAIK the only way is to turn OFF the new feature "Monitor the number of unique recipients per hour to detect potential spammers." (in "WHM > Server Configuration > Tweak Settings > Mail") and just use only the old feature "Max hourly emails per domain" that can be set per account basis.
If the user who is sending out thousands of mail per hour is on its own domain/cpanel account, go to "WHM > Account Functions > Modify an Account" and modify his account by setting "Maximum Hourly Email by Domain Relayed" to 10000 only for his account.

Anyway, IMHO, a user that sends thousands of email per hour is not normal. He should use an application to send them slowly, your server IP might end up blacklisted by other servers.