Originally Posted by ckissi
Is it worth to install Qmail on CentOS over sendmail, (sendmail is default there) ? We'll manage it via Virtualmin.
For the light weight load you've indicated you are going to be fine with whatever selection you make. Sendmail has historically been perceived as having the most security related issues, all of which have been dealt with in up to date vendor RPMs.
For what it is worth I would just go with Sendmail. The Red Hat documentation for setup/configuration is more than enough to handle its somewhat archaic configuration file.