Components of an Internet Mail System

IMail Server provides the following basic services required to implement an Internet-based mail system:

• The SMTP server lets IMail Server communicate with other mail servers on the Internet.
• The POP3 server lets an e-mail client retrieve mail from the mail server.
• The IMAP server provides another method for an e-mail client to access mail on the mail server.

This guide focuses on setting up the mail server; however, you also need the following software components to connect your mail server to the Internet and to provide mail capabilities for your users:

• Domain Name System (DNS) server. The DNS server can be on your network or hosted by your Internet Service Provider.
• E-mail client. Users can use the Ipswitch IMail Web Messaging client to read and send mail via either a Web browser or proprietary e-mail client for each mail user, such as Microsoft® Outlook Express®, Microsoft® Outlook®, or Qualcomm Eudora®.