Why am i getting a dns error message when i try to login to my email?

try to login from here for faster and error-free access


http://us.m.yahoo.com/p/mail





and





It seems you are using new yahoo mail, which needs latest browsers.For error free emailing use yahoo mail classic





Use the below link to return to yahoo mail classic and click yes ,when it asks for "opt out"


http://us.mg1.mail.yahoo.com/dc/optout?s





for co.in account,


http://in.mg1.mail.yahoo.com/dc/optout?s

Why am i getting a dns error message when i try to login to my email?
It has been like this for weeks now. 30 minutes I've been trying to open my mail and no luck.





I just give it a few minutes and try again. It has happened so often that I am considering changing to a different provider.