Linux - How to remove sendmail from your system, Delete mails from send mail

How to remove sendmail from your system

Here's how to remove sendmail from your system.

1. Find sendmail in your boot scripts. It's usually in either /etc/rc or
/etc/init.d/sendmail. It looks like

  # sendmail -bd -q15m

-q15m means that it should run the queue every 15 minutes; you may
see a different number. Comment out this line.

2. Kill the sendmail daemon. You should first kill -STOP the daemon; if
any children are running, you should kill -CONT, wait, kill -STOP
again, and repeat ad nauseam. If there aren't any children, kill
-TERM and then kill -CONT.

3. Check whether you have any messages in the sendmail queue,
/var/spool/mqueue. If you do, you will have to try flushing them with
sendmail.bak -q. If necessary, wait a while and run sendmail.bak -q
again. Repeat until the queue is empty. This may take several days.

4. Remove the setuid bit on the sendmail binary, to prevent local users
from gaining extra privileges through sendmail's security holes. The
binary may be at several different locations:

 # chmod 0 /usr/lib/sendmail
 # chmod 0 /usr/sbin/sendmail
 # chmod 0 /usr/lib/sendmail.mx

5. Move the sendmail binary out of the way:

 # mv /usr/lib/sendmail /usr/lib/sendmail.bak
 # mv /usr/sbin/sendmail /usr/sbin/sendmail.bak

The topic on Linux - How to remove sendmail from your system is posted by - Math

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