Sun Java Communications Suite 5 Deployment Planning Guide
Chapter 23 Introduction to Communications Express Software
Communications Express provides an integrated web-based
communications and collaboration client. Communications Express
is a common component of Messaging Server and Calendar Server,
providing end users with a web interface to their calendar
information and mail, as well as an address book.   This chapter
contains the following sections:  Communications Express
Overview  Communications Express depends upon the following Sun
Java System component products:  You install Communications
Express as a front-end server (in a multi-tier environment). The
Messaging Server packages can then be configured to run as
Webmail server, which connects to a back-end store running
Webmail server. Also, both Communications Express and Messenger
Express can run on different IP addresses.  In addition, you can
configure Communications Express to have the Address Book on the
front-end machine store its data either