Need help with web-based Dadamail mailing list program installation

I have installed the Dadamail mailing list manager program onto my web server. Everything seems to work properly, however it is not sending any emails out (from the list, subscription emails, etc.). If you have experience with this I need your help! It may only take you a couple of minutes if you've worked with Dadamail before. To find out more about dada mail, click here: [login to view URL] Please make sure you know how to make the necessary changes to get this program working before offering your services. You can review the website noted above for full details on how it works. I would like to have this job completed within 24 hours of hiring you. Thank you.