Multisite Wordpress secure connection error

I currently have CentOS 6.5 installed with LAMP and WordPress. I am using NameVirtualHost to host 2 WordPress sites with their own domain names. The sites essentially work and the installation and configuration has gone well except when I attempt to search for more themes for the WordPress site I get an error “An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration.” Looking at the error log on the server the only additional information I see is “Unable to establish a secure connection to WordPress.org.” Does anyone know what additional settings I may have missed in regards to this?

astarr responded in previous post about this suggesting I check the Site URL and WordPress URL in general->settings inside WordPress. Both of these settings were set to http:domain.com. Still having trouble with this. Any help would be appreciated.