Can't access or ping or external website

We recently changed our Host provider and updated DNS files on godaddy to point to our new host. I can access the website on other external networks but I can’t access it from the internal network. I can’t ping the temporary website address that they gave us. I can ping the website address cm-plastics when I am outside the network and it returns the proper address for the server. I can’t access the email servers either when I am on the internal network but they work fine when outside the network. I can ping Google at 8.8.8.8 and access all other websites internally. ???

Hairpin NAT again?

http://forum.mikrotik.com/t/port-foward-for-https-and-http/114958/1