Simple Steps to setup sendmail in your linux installation.

Here, I have listed simple steps to configure sendmail in linux installation. Of course, it is not organized properly, but may help you or hint you what to do.

1. To compile the sendmail.cf Use the following command

2. The default sendmail.mc has setup with 127.0.0.1

This restricts the sendmail access to localhost  alone

Hence, comment the 127.0.0.1 line and create a new line
with Addr=0.0.0.0 as given below.

This will allow you to send and receive email in and out
of all internet domains (all hosts).

3. Normally, due to lot email spam, ISPs put your email in
bulk mail folder as they filter the mail as junk mail.

If you use your ISP’s smtp host as gievn below
all emails are considered genuine. Otherwise
you can see the mails in junk mails only.

4. You need to tweek the /etc/hosts to have your domain
appended to emails like jayhelp@notesbit.com

Original =>    127.0.0.1    rh9-pc1.notesbit.com rh9-pc1 localhost.localdomain localhost

Changed  => Correct one.

Caution =>

Never change like this (This will block oracle 11i access).