Postfix Configuration Examples

Configuration 1: Active/Standby Configuration Example

Figure 1: Typical LifeKeeper Active/Standby Postfix Environment 1

• The Postfix configuration files are on both servers

• The Postfix executable files are on both servers.

• The queue area (e.g. /var/spool/postfix) is on shared storage.

• The spool area (e.g. /var/spool/mail) is on shared storage.

Figure 2: Typical LifeKeeper Active/Standy Postfix Environment 2

• The Postfix configuration files are on shared file system.

• The Postfix executable files are on shared file system.

• The queue area (e.g. /var/spool/postfix) is on shared storage.

• The spool area (e.g. /var/spool/mail) is on shared storage.

Configuration 2: Active/Active Configuration Example

Figure 3: Typical LifeKeeper Active/Active Postfix Environment

[Server1 (Instance 1 is active)]

The Postfix configuration file: /etc/postfix

The Postfix executable files: /usr/sbin

The queue area: /sdb1/inst1/postfix

The spool area: /sdb1/inst1/mail

<main.cf>

inet_interfaces = 10.1.5.25, localhost

[Server2 (Instance 2 is active)]

The Postfix configuration file: /etc/postfix2

The Postfix executable files: /usr/sbin

The queue area: /sdc1/inst2/postfix2

The spool area: /sdc1/inst2/mail2

<main.cf>

inet_interfaces = 10.1.5.26

alternate_config_directories = /etc/postfix2

The following figure shows the Postfix resource hierarchies displayed in the LifeKeeper GUI: