Admin Accounts With Mailboxes
The Risk
An administrator account is a powerful identity. Using these accounts for anything other than the configuration of users and settings and by a certain user leaves your business unnecessarily vulnerable.
Accidental exposure of administration credentials to malicious actors due to:
Unnecessary Sharing of Credentials.
Unnecessary Overuse of sensitive credentials.
Unintentional or accidental damage caused by a user in a nonadmin capacity.
Lack of auditing/trackability for all admin activities.
The Solution
If the mailbox is required, remove administrative privileges from these accounts and, if necessary, create a new separate administrative account (unlicenced) for that user.
If the mailbox is not required, remove it, and you will save the cost of a mailbox license.