How to remove Sendmail from linux OS?

Follow these simple steps to remove sendmail from your machine.

Step 1

Remove the default RPMS.

sendmail

sendmail-cf

sendmail-doc 

[root@local /root]# rpm -e sendmail sendmail-cf sendmail-doc 

If a dependency issue comes in, please use the following command.

error: removing these packages would break dependencies

[root@local /root]# rpm -e sendmail sendmail-cf sendmail-doc --nodeps 

Step 2

Ensure all the sendmail processes were removed completely. 

If not kill the process using the process ID.

[root@local /root]# ps -aux|grep 'sendmail'

You can use kill <processID> or killall sendmail to terminate all other processes.