I’m not really a fan of redhat, neither of sendmail. Today I had to set up mail send on a Red Hat Enterprise Linux Server release 5.5 where sendmail was already installed. This was the easy part to fix. First remove sendmail, forcing it to ignore dependencies.
Then install postfix
Now to the SES part, well, no need to reinvent the wheel, just check out this debian Howto for SES
For red hat of course you need to do use yum install stunnel. Unfortunately there is no start up script. Here you can get a startup script for stunnel That’s it. … did I mention I don’t like red hat?