HP-UX System Administrator's Guide: Configuration Management

Configuring the Hub
The procedure for configuring the hub computer in a Gateway Mail Hub topography
is:
1. On the hub computer, edit the file /etc/rc.config.d/mailservs:
a. Set the environment variable SENDMAIL_SERVER to 1 to indicate that this
computer is the hub computer:
SENDMAIL_SERVER=1
b. Set the environment variable SENDMAIL_SERVER_NAME to null to indicate
that no other computer serves this one:
SENDMAIL_SERVER_NAME=
c. (Optional) Set the environment variable SENDMAIL_FREEZE to 1 to indicate
that the sendmail configuration file is to be frozen. With older computers,
and in certain other circumstances, a frozen configuration file can speed up
sendmail’s performance by reducing the time it needs to parse its
configuration file.
SENDMAIL_FREEZE=1
2. Reboot the computer to start up and properly configure the sendmail daemon.
Configuring the Clients
Using Gateway Mail Hub topography each of the clients in a local workgroup can send
e-mail to the others without having to go through the hub. For this to be successful
each of the clients must be running its own sendmail daemon.
On each client computer:
128 Configuring Mail