Man, am I glad to be in a channel related to postfix! I installed webmin/virtualmin (A control panel), which automatically installed Postfix. Everything apparently is automatically taken care of by Webmin to handle virtual domain emails, etc. So, I added a domain.. and the admin of the domain has php scripts that send out activation emails and such.
However, issue #1: The email address shows up as apache@my.domain.com, whereas he would like it to show up as something like activation@hisvirtualdomain.com.
Issue #2: When I use virtualmin's web interface and send emails, it usually delivers to gmail/custom domain emails handled by GoDaddy.. but not to my @hotmail, or @msn.com emails. (It got sent a couple times properly, but not after that) .. how can I solve these issues? (forum URL: http://tinyurl.com/3xrugt )