Linux send mail configuration

Send mail through linux command prompt

Send mail  Configuration

Step 1: Installation
   
    yum install sendmail-cf

Step 2: Open file /etc/mail/sendmail.mc
       
Step 3:    Comment line (116) by putting dnl in front of this line
    ex:- dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl

Step 4: Create Sendmail configuration file ...by executing these command

    m4 sendmail.mc > sendmail.cf

Step 5:  Start sendmail Service

    /etc/init.d/sendmail start

Step 6: Add Sendmail service in Hosts.deny so no one can use it except loopback.
    i) open /etc/hosts.allow file and past this:

        sendmail: 127.0.0.1    

    ii) now open /etc/hosts.deny file and past this:
   
        sendmail: ALL