You have an Exchange Server 2010 organization named Contoso， Ltd.The organization contains an Edge Transport server.Users from a company named Fabrikam， Inc.send messages over the Internet by using the @fabrikam.com e-mail address suffix.You need to ensure that messages sent from Fabrikam users to Contoso users have the @contoso.com e-mail address suffix in the source address.
What should you create？（）

You have an Exchange organization named Contoso， Ltd.All servers in the organization have Exchange Server 2010 Service Pack 1 （SP1） installed.The organization contains an Edge Transport server. 
Users from a company named Fabrikam， Inc.send e-mail messages over the Internet by using the fabnkam.come-mail address suffix. Contoso acquires Fabrikam. You need to ensure that messages sent from Fabrikam users to Contoso users have the contoso.com e-mail address suffix in their source address. 
What should you create？（）