allow outgoing for specified email addresses in an external domain

Hi,

We have FortiMail and trying restrict outgoing email to a few addresses only in an external domain, let's say to user1@abc.com and user2@abc.com  and block off everything else to that domain.

I have created 2 Recipient Policy with Recipient Pattern, first policy with all the email addresses, and then second policy with wildcard *@abc.com, then enabled Content profile and set max size to 10 and also 102400, Action to Reject.

I can see the second policy is able to catch non whitelisted address as expected, but still accept and send those emails and not reject them.

Any idea why or better method to implement this?