You are the Exchange administrator for your company. The network consists of an intranet segment and a perimeter network.
A server named ISA1 runs Microsoft Internet Security and Acceleration (ISA) Server and connects the perimeter network to the Internet.
The network contains two servers named Exch1 and Mail1. Both servers run Exchange Server 2003. Exch1 is connected to the perimeter network and is configured as a frontend server.
Exch1 also hosts Microsoft Outlook Web Access. Mail1 is connected to the intranet and is configured as a backend server. Mail1 hosts all user mailboxes.
The firewall between the intranet and the perimeter network is configured to allow RPC communications between Mail1 and Exch1.
A company investigator discovers that confidential email messages are sometimes intercepted when remote users connect to Outlook Web Access on Exch1.
You need to ensure that all Outlook Web Access communications from the Internet are encrypted.
Your solution must require the minimum amount of encryptionrelated processing on Exch1. What should you do?