You are the Exchange administrator for your company. Exchange Server 2003 is implemented as the companywide messaging system.

The Exchange server runs on Windows 2000 Server. The relevant portion of the network is configured as shown in the exhibit.

Company e-mail policies state that internet users must be able to securely download e-mail messages, view downloaded e-mail messages on their local computers, send outbound e-mail messages, and access the company’s internal e-mail address list.

You need to configure the firewall to meet these requirements.

Which three ports should you make accessible to internet users? (Each correct answer presents part of the solution, choose three)

A.
global catalog LDAP

B.
HTTPS

C.
RPC endpoint mapper

D.
IMAP4 SSL

E.
SMTP