When I open my email and when I open up iTunes I get this error message. My new iMac is looking for a server that was on my old Non Intel Mac G5. Can someone help? Maybe I can uninstall and reinstall iTunes, and change my email address. I really don't want to change my email address. I know I'm not the only one with this problem. Some people blame it on Time Machine. I don't think that's my problem. I think it happened when I upgraded to Mountain Lion or when I transferred my files from my old computer to my new computer. What do you think I should do?
iMac (27-inch Mid 2011), OS X Mountain Lion (10.8.3)