There is no need to create a new user for each of the addresses (if this is same). In the Exchange Management Console > open Properties of info user and go to the Email Addresses. Here u can add an SMTP address and add emails (as u mentioned) as aliases. Remember, If manages by different people, u can either add these aliases to individual users or u can create a separate user or distribution list to handle these addresses.

There is no need to create a new user for each of the addresses (if this is same). In the Exchange Management Console > open Properties of info user and go to the Email Addresses. Here u can add an SMTP address and add emails (as u mentioned) as aliases. Remember, If manages by different people, u can either add these aliases to individual users or u can create a separate user or distribution list to handle these addresses.