We are using the exchange server for around 6 months with 7 users. We bought 10-user KAV for exchange licenses.
Several months later, some of our staffs left the company and we already deleted their user accounts. We didn't delete their mail boxes and their mail boxes don't need protection from virus. Can I setup KAV 5 for exchange to exclude these mailboxes and free up some of the licenses?
We have some new staffs and there are all together 11 mail boxes and 3 old mail boxes. We decided to buy additional licenses for that but we'd like to know if we need to buy an additional 10-user license or to buy a new 20-user license in this case. If 10-user license is needed, will we receive one 20-user license file for the server? Will we have to renew all the licenses 6 months later?