Answer / amsin21

Sendmail should be installed by default when you install Red
Hat Linux. If it is not then you need to install the
Sendmail RPM's with the Red Hat distribution.

Configuring Sendmail
--------------------

1) Edit file "/etc/mail/sendmail.mc" - Look for the line:

DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')

Change this line to:

dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')

Save the file.

2)Make the sendmail configuration file:

# m4 /etc/mail/sendmail.mc > /etc/sendmail.cf

3)Restart Sendmail:

# /etc/rc.d/init.d/sendmail restart

Answer / balvinder singh rawat

to add to the above answer

install sendmail-cf rpm

after installing it

just run service sendmail restart after any changes to
sendmail.mc

Answer / manoj

above answer is true but one last step is missing
#sendmail -d0 < /dev/null
#service sendmail restart
#chkconfig sendmail on

How to give the root permision to users?

3 Answers   Wipro,

---

what are different ways the context switch happens from user to kernel space or vice-versa ?

0 Answers   Alcatel,

---

what are Softirq's and how many major numbers be allocated in the linux kernel(2.4) ?

1 Answers  

---

how to create a ftp user on redhat linux 4.0?

6 Answers   Accenture,

---

what is cups and how to configure?

7 Answers   IBM,

---

How to create secured appeche web sever ?

1 Answers   HCL,

---

Explain process management system calls in linux?

0 Answers  

---

What does exec family return?

1 Answers  

---

what is nis server

13 Answers  

---

What are the signals we have in Linux

3 Answers   HCL, NetApp,

---

how to configure http server on red hat linux4.0?

5 Answers   IBM,

---

What is atomic function / atomic variable ?

1 Answers   Broadcom,

---