You work as a network exchange administrator at company.com.the company.com network currently consists of a single active directory forest containing a single domain named company.com.the company.com organization makes use of microsoft exchange server 2010 as their messaging solution.company.com has recently acquired a new internet domain name from the internet service provider （isp）.during the course of the business week you receive instruction from company.com to ensure that all the network users are able to send and receive e-mail messages sent to the newly acquired domain name. What should you do？（）