Dear Robert I have a bigger problem. sendmail was running previously. thats the reason I was able to send mail. Mow did chkconfig off for sendmail. Now postfix is running. Both send/recv not working now. While sending mail from roundcuble it says "connection to server failed". regards -austin On Thu, Mar 14, 2013 at 4:47 AM, Robert Moskowitz <rgm at htt-consult.com>wrote: > > On 03/13/2013 07:03 PM, Austin Einter wrote: > >> Dear All >> I have some basic doubts. >> >> 1. Do I need to run postfix like /etc/init.d/postfix restart >> 2. What I found it , it is starting.., but when I check immediately ps -ef >> | grep postfix, I do not see any postfix process running. >> > > In Centos we still have the service command, and it works well with > services like postfix. So you start, restart, and stop with: > > service postfix start/stop/restart/status > > Note that at some point, probably Centos 7, 'service' is going away. > > Oh, and: > > chkconfig --list|grep postfix > > It should be on for all run levels if not: > > chkconfig postfix on > > > 3. Is there any system config file, where I need to mention system need to >> run postfix not sendmail.... >> > > Did you install sendmail? > > grep sendmail /root/install.log > > service sendmail status > > chkconfig --list|grep sendmail > > > > 4. If postfix is not running, how am I able to send mails out.... >> > > check to see what is running. > > > 5. I read some "make sure port 25 does not relay mails", can somebody >> explain more in this regard and how do I stop port 25 relaying mails... >> > > Read to Postfix docs on this first then ask questions. Do a google > search. This is something you need to know about. the campworld howto > sets you up safe. If you got all of his stuff done. > > >