Remove all mail components from CentOS VPS

I recently purchased a VPS with CentOS on it. I am trying to remove all the default mail components (sendmail, fetchmail, etc.). I uninstalled sendmail, fetchmail and the popa3d things running, but there is still a service running on port 110 and 995 so that my new installed mailserver (kerio) will not start on those ports. How do I ID the processes using those ports and permenately kill them. Thanks in advance.

 

 

 

 

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