I have my web hosting servers at servermatrix and some clients from places like the UK, France, New Zealand, Aruba, and Australia sometimes cannot access their domains from the domain name but the server ip/username (temp url) works for them. Apparently when they can’t access it through the domain they can go to other websites fine and I have been telling them to contact their ISP but this is pretty common now with a lot of isps from different countries. Anyone else have this problem or know what the heck this is? When they can’t access the website they say they can access servermatrix.com so I am not really sure what’s going on and why they cannot access my server.

Try doing several trace route tests from different location and compare the results using http://traceroute.org

Also make sure your name servers were setup and configured correctly.

I dont think that is the problem. I have had them do trace routes and forward them to servermatrix but SM always says "Contact your ISP".

having problems access your client 's web site from 1 or 2 location might be the local ISP issues. If visitors from UK, France, New Zealand, Aruba, and Australia cannot access the site / domain as well, there might be something else which is wrong.