You are preparing to configure Outlook Anywhere on your existing Exchange Server 2007 organization. A Mailbox server named ExchMb1 contains all of the mailboxes that will be accessed by users who use Outlook Anywhere. A Client Access server named ExchCas1 is available from the Internet. Users will access Outlook Anywhere with mail.contoso.com as the host (A) name. You need to configure the Exchange organization so that Outlook Anywhere can be used by Microsoft Office Outlook clients from the Internet. Which three actions should you perform? (Each correct answer presents part of the solution. Choose three.)

A.
Install RPC over HTTP Proxy on ExchCas1.

B.
Install a valid SSL certificate for ExchMb1 on the default Web site.

C.
Install a valid SSL certificate for ExchCas1 on the default Web site.

D.
Install RPC over HTTP Proxy on ExchMb1.

E.
Run the Enable-OutlookAnywhere -Server:ExchCas1 -ExternalHostName:mail.contoso.com – SSLOffLoading:$false -ExternalAuthenticationMethod:Basic cmdlet.

Run the Enable-OutlookAnywhere -Server:ExchMb1 -ExternalHostName:mail.contoso.com – SSLOffLoading:$true -ExternalAuthenticationMethod:Basic cmdlet.