How to Change Exchange Mailbox Default Size

Hi,
 
When we create a new mailbox on HC10 for any organization, the default mailbox size is set to 50MB. Can this be changed to Unlimited?
 
Regards

To create mailboxes of fixed sizes, you should make use of Composite Resources. I am sharing below with you the link which explains how to create mailboxes of fixed sizes using Composite Resources :
https://help.hostingcontroller.com/hc10/default.aspx#pageid=understanding_composite_resources
 
If you need any further guidance then feel free to ask us.