Every mail server has its own settings. There's no way of saying which settings you have to change without seeing the error message. Please click on it to select it, then use right-click to copy it and paste it into your reply.
I am having same problem have uninstalled live mail and then reinstalled, that did not work error message is as follows:
The connection to the server has failed.
Windows Live Mail Error ID: 0x800CCC0E
Socket Error: 10061
Funny thing is my wifes lap top is experiencing same problem, which started at the same time - Any help on this would be greatly appreciated.