Your network contains an Active Directory forest. The forest contains a single domain named contoso.com.
You have an Exchange Server 2013 organization named Contoso.
You plan to create an additional SMTP domain named sales.contoso.com. You will use sales.contoso.com as the primary SMTP address for the users in the sales department.
You create a new email address policy and apply the policy to the sales users.
New sales users report that when they attempt to access their email from the Internet for the first time by using Microsoft Outlook 2010, they fail to connect. The sales users connect to their mailbox internally successfully by using Outlook 2010. All other users can connect to their mailbox from the Internet and internally.
You need to ensure that the new sales users can connect to the Exchange Server 2013 organization by using Outlook Anywhere from the Internet.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)