How to rotate among several mail servers

I want to discuss another important scenario. During delivery server rotations, I have noticed that mailwizz sends campaigns from one delivery server, suppose delivery server A, and after the certain limit (which we have set in campaigns section of customer groups), it automatically changes delivery server, suppose B. Then after sending campaigns, it starts sending campaigns with the former delivery server i.e delivery server A, rather than sending campaigns with another new delivery server, suppose delivery server C (It is active in MailWizz as well).

Now, I want you to suggest to me a solution to the problem (discussed above) that MailWizz must not choose the delivery server again, once it is already selected and reached its limits.