If you want to get the activation emails and other notices required to be part of this site, you need to whitelist this domain. This article below explains how to do it. I would whitelists two domains (or subdomains), beta.utefans.net and utefans.net. Also, add firstname.lastname@example.org and email@example.com to your address/contact book. That should take care of it.
For other older services like @hotmail.com and @aol.com you may want to do the same, and also check your spam filter.