Hello my name is Daniel.
I don't write english very well but I will be trying.
A few days ago an account of our company began to send too many emails spam according the following picture:

Therefore thanks to this, the smartermail announces me "EMAIL THROTTLING" in each one of our parteners account, so none of them after of this important announcement could send emails.
We fixed this problem reducing the outgoing mail limit for this specific account or specific person, but the problem still there, because this account still continues send spam emails, few, but continues. Also the other problem is that We cant see this  spam outgoing mail, because in the outbox there are no the "so-called spam emails".

Please. Is there some solution or option to find this spam emails o block this emails? Thank You Very Much
-Greetings-