I want to have my own mail server just like any webhosting company SMTP ( Example godady, rackspace etc). I need to know for this whether Cpanel is better which has Exim as MTA or Parallel Plesk is better which has Postfix as MTA. I need to know the comparision from performance, stability, security etc.
PostFix is better than Exim but I would recommend Qmail which is offered by Plesk itself. It is easy to tweak and much faster.