Step 2: Create DNS Entries for Your Mail Server

Determine the Domain Name System (DNS) settings required for the system you will install IMail Server on. Before you create DNS entries, plan the following for your Windows TCP/IP settings:

• Primary Host. The server you install IMail Server on.
• Host Name (of Primary Host). The host name for your e-mail server, for example,
  mail.
• IP Address (of Primary Host). The IP Address is a static address for the e-mail server host (for example, 156.21.50.15).
• Domain Name. The domain name identifies the network that the host is on
  (for example, domain.com).

To identify your mail host in the DNS, use the Host Name plus the Domain Name. For example, mail.domain.com. This is also known as the Fully Qualified Domain Name (FQDN).

To add the DNS information on a Windows 2000 system:

• Click the System icon in the Control Panel, select the Network Identification tab, then click Properties. The Identification Changes dialog box shows the domain information.

To add the DNS information on a Windows 2003 or Windows XP system:

• Click the System icon in the Control Panel, click Network Connections > Local Area Connections > Properties. Select Internet Protocol (TCP/IP) from the list, then click Properties > Advanced > DNS tab.

The Host Name and Domain must be registered in the DNS (Domain Name System) in order for your remote hosts (not on your local network) to communicate with your system.