A user with an account of mail and 5 main alias, how many cals consumes? Example: prymary: info@domain.com Alias: info-internal@domain.com Alias info-external@domain.com Exchange 2003

Hello, A CAL is not a software product; rather, it is a license that gives a user the right to access the services of the server. So, CAL is not required to add email addresses on Exchange 2003. You can know CAL more detail from this document: Client Access Licenses and Management Licenses https://www.microsoft.com/licensing/about-licensing/client-access-license.aspx Thanks, EvanEvan Liu TechNet Community Support

Hello, A CAL is not a software product; rather, it is a license that gives a user the right to access the services of the server. So, CAL is not required to add email addresses on Exchange 2003. You can know CAL more detail from this document: Client Access Licenses and Management Licenses https://www.microsoft.com/licensing/about-licensing/client-access-license.aspx Thanks, EvanEvan Liu TechNet Community Support