HP-UX Mailing Solutions White Paper

This section addresses the following topics:

Prerequisites

Following are the prerequisites for configuring Sendmail on an HP-UX operating system:

• The Sendmail 8.13.3 software

NOTE: Sendmail 8.13.3 is available in the core HP-UX 11i v3 operating system.

• The complete hostname of the system where the Sendmail server is installed. For example,

system_name.domain_name.com.

• A well connected system. To ensure that the system is well connected, complete the following

checks:

— Ensure that the system is connected to the network and the complete host name is

registered in the domain name server (DNS).

— Ensure that the /etc/nsswitch.conf file contains the following entry:

hosts: dns files

aliases: files

• Ensure that the /etc/resolv.conf file contains the following entry:

nameserver <Your DNS server’s IP address>

domain <Your domain name>

Following is a sample entry in the /etc/resolv.conf file:

nameserver 15.10.40.3

domain india.hp.com

• Test the connectivity of the system with a different system using the ping command.

Setting Up the Sendmail Server on an HP-UX System

Follow this procedure to set up the Sendmail server on an HP-UX system:

1. Ensure that Sendmail is available in the system:

# which sendmail

/usr/sbin/sendmail

2. Ensure that the Sendmail instance is running in the system:

# ps -ef | grep sendmail

root 1360 1 0 10:37:47 ? 0:03 sendmail: accepting connections

Follow this procedure if the Sendmail instance is not running:

1. Ensure that the /etc/rc.config.d/mailservs file contains the following entry:

export SENDMAIL_SERVER=1

export SENDMAIL_SERVER_NAME=

export SENDMAIL_RECVONLY=0

export SENDMAIL_SENDONLY=0

If the /etc/rc.config.d/mailservs file does not exist, create it with the entries

mentioned previously.

2. Ensure that the Sendmail configuration file, /etc/mail/sendmail.cf, exists.

If this file does not exist, copy the /usr/newconfig/etc/mail/sendmail.cf to

the /etc/mail directory:

# cp /usr/newconfig/etc/mail/sendmail.cf /etc/mail/sendmail.cf

3. Start the Sendmail instance:

# /sbin/init.d/sendmail start