Exchange 2000 Server expands the routing capabilities of
Microsoft Internet Information Services (IIS) to allow
complete and secure collaboration between the Information Store and
remote clients through a number of protocols. IIS is part of the
Windows 2000 Server operating system and provides basic
functionality to publish information on your intranet or the
Internet.
Through IIS, Exchange supports the following Internet
protocols:
HyperText Transfer Protocol (HTTP). Exchange
2000 Server has native support for HTTP 1.1, an Internet standard
that provides access for Web browsers and other services. Exchange
also supports an extension to HTTP 1.1 called Distributed Authoring
and Versioning (WebDAV). WebDAV, also an Internet standard, allows
an HTTP client to not only retrieve, but also manipulate
information in the Information Store. More...
Internet Message Access Protocol version 4
(IMAP4). Used by clients to read mail or access public folders
stored on a server. When downloading all of one user's mail to a
specific computer is impractical, IMAP enables clients to access
and manipulate messages stored within mailboxes on the server
instead of managing mail on the client computer. More...
Network News Transfer Protocol (NNTP). NNTP
enables Microsoft Outlook users to participate in online
discussions across the Internet. Exchange also enables users
running client applications that support NNTP to access newsgroup
public folders made available on Exchange servers. Users can read
and post items, such as messages and documents, to NNTP newsgroups
which are represented in Exchange as public folders. Items in
newsgroups can be replicated to USENET host computers in newsfeeds.
More...
Post Office Protocol version 3 (POP3). The
POP3 protocol, designed primarily for offline use, is used to
retrieve messages from a server. A user typically connects to a
server and downloads all of their e-mail from their inbox to the
client. More...
Simple Mail Transfer Protocol (SMTP). SMTP
serves two functions in Exchange 2000 Server. It is the native
protocol for mail submission as well as the native transport
protocol. This means clients use SMTP to submit messages and
servers use it to route messages, exchange replication information,
and other data. More...
Note Exchange's Global Settings allows administrators
to define organization-wide defaults for messages sent over the
Internet and for mailbox delivery restrictions. These settings
apply to all users, but can be overriden with settings on
individual mailboxes.