So I have a me.com account. I tried to login with that account but mail didn't work (could not send or receive messages). Then I proceeded to create a new me.com account, which after finishing setting up, it worked in Mail, but could not receive messages (from gmail.com). It said "Delivery Notification Failure. So then, I deleted the new me.com account, and tried to setup my original account, but still didn't work. Since the new account worked, I setup that account again and now it doesn't work either! When I try to send an email, a message pop up saying that it couldn't connect to server. And I cannot receive messages either when sending them from a gmail account. I go to Account settings, but it doesn't let me change anything. I can just change username and password. Nothing else. What happened to "Just works" from Apple. Since Lion NOTHING "Just Works" Des anybody knows how to fix it. I would really appreciate it. Please!