Microsoft® Exchange Server 2007 Administrator's Companion

Chapter 25. Supporting Other Clients

• Post Office Protocol Version 3

• Internet Messaging Access Protocol 4

• POP3/IMAP4 Considerations

• Summary

This chapter covers Post Office Protocol version 3 (POP3) and Internet Message Access Protocol version 4 (IMAP4), both of which provide alternate ways for an e-mail client to retrieve messages from an e-mail server. At first glance, talk of Internet mail foundational protocols may seem like a dry topic. However, in reality, a good understanding of the basic Internet protocols will greatly assist you in your efforts to troubleshoot and understand the Microsoft Exchange Server 2007 architecture.

POP3 and IMAP4 are different ways to access mailboxes housed on Mailbox servers (or to access other mail servers outside ...