This chapter provides a list of software that are required for installing your SunTM Internet Mail ServerTM (SIMS) 4.0 as well as the SIMS High Availability system.

Topics in this chapter include:

Software requirements

Configuration requirements

Software Requirements

SIMS 4.0 requires that the software packages listed in TABLE 3-1 and TABLE 3-2 (for HA systems only) be installed. SIMS installation automatically installs the application listed in TABLE 3-1 if they are not available on your system.

TABLE  3-1   SIMS Software Requirements

Application	Required for
Sun Web Server 2.1	SIMS Administration Console, Web Access
Netscape Browser 4.06 or higher (required but not installed automatically)	SIMS Admin. Console
HTML 2.0 complaint browser or higher	SIMS Administration Console, Web Access
Secure Sockets Layer (SSL)	Secure POP3/IMAP4
Core Java Packages	SIMS Administration Console, utilities
LDAP Package	SIMS access to the directory

TABLE 3-2 shows the required applications for the SIMS High Availability systems.

TABLE  3-2   SIMS/HA Software Requirements

Application	Volume Manger	File System	Operating System
SunCluster 2.2	VxVM 3.0.1	VxFS File 3.3.2	Solaris 2.6, 2.7
SunCluster 2.2	DiskSuite 4.2	UFS	Solaris 2.6, 2.7

TABLE 3-3 provides descriptions for these applications that are required by the SIMS High Availability system.

TABLE  3-3   Description for SIMS/HA Requirements

Application	Description
SunCluster 2.2	Switch between nodes in the cluster
VxVM or DiskSuite 4.2 Volume Manger	Configure the shared disk
VxFS or UFS file systems	Logging file systems

Configuration Requirements

Before installing SIMS, you need to make sure the following requirements have been met:

DNS Configuration Files

Before installing SIMS, be sure that the two configuration files /etc/nsswitch.conf and /etc/resolv.conf are set up correctly. See "Configuring the DNS Setup" on page 92 in Chapter 11, "Troubleshooting the Sun Internet Mail Server," for detailed instructions for setting up your DNS configuration

You need to make sure that the DNS is installed and running before installing SIMS.

Naming Services Requirement

The name service (NIS or NIS+) requires that the machine designated as the mail server uses a fully qualified DNS name.

File System Requirement

SIMS requires that the message store be installed on a local disk and not on an NFS or other remote file system mounted partition in Solaris 2.6 or 2.7.

Logical Host Name Configuration for High Availability Systems

The logical host name for High Availability systems must have its own IP address which is different from its physical host IP address. This host name must be a Domain Name Server (DNS) alias of another host name.