I setup centos5 perfect. I have a dynamic IP and am using noip dot com. I have a php dating script I want to install. the script installs on the database with mail accounts set up. It has auto reply when someone signed up on the site. Will this program run on my server and if it will, will it be able to send emails to peoples hotmail and yahoo accounts for registration to the site? Or do I need to get a static IP for mail to work corect ?