Safari cannot find server questions

Please help, I have installed Mobile Joomla, but when I click on my site with an iphone, I get the message Safari can not open page because server can not be found. Any suggestions to fix?

It may be that you setup redirect to mobile subdomain, but didn't setup the subdomain as an alias to main domain.

What is url of your site?

Yes, I did redirect to the sub domain, how do I set up the subdomain as an alias to the main domain?