You have an Exchange Server 2013 organization.
The help desk reports that users fail to access their mailbox by using the URL http://mail.contoso.com. All of the
users successfully connect to their mailbox by using Exchange ActiveSync.
You need to ensure that all of the users can access their mailbox by using the URL http://maif.contoso.com .
What should you configure on a Client Access server?

A.
From Internet Information Services (IIS) Manager, configure HTTP Response Headers on the OWA virtual
directory.

B.
From Exchange Admin Center, create a new Outlook Web App mailbox policy.

C.
From File Explorer, modify the permissions of the Web.config file in the Default Web Site folder.

D.
From Internet Information Services (IIS) Manager, configure HTTP Redirect on the default web site.

Explanation:
http://technet.microsoft.com/en-us/library/aa998359(v=exchg.150).aspx
Use IIS Manager to simplify the Outlook Web App URL and force redirection to SSL
1. Start IIS Manager.
2. Expand the local computer, expand Sites, and then click Default Web Site.
3. At the bottom of the Default Web Site Home pane, click Features View if this option isn’t already selected.
4. In the IIS section, double-click HTTP Redirect.
5. Select the Redirect requests to this destination check box.
6. Type the absolute path of the /owa virtual directory. For example, type https://mail.contoso.com/owa.
7. Under Redirect Behavior, select the Only redirect requests to content in this directory (not subdirectories)
check box.
8. In the Status code list, click Found (302).
9. In the Actions pane, click Apply.
10. Click Default Web Site.
11. In the Default Web Site Home pane, double-click SSL Settings.
12. In SSL Settings, clear Require SSL.
Note:
If you don’t clear Require SSL, users won’t be redirected when they enter an unsecured URL. Instead, they’ll
get an access denied error.